Hot Fudge Sundae

Hot Fudge Sundae
⏱️ cook time 20 minutes
🍽️ servings 4
⚡ Difficulty easy

intro

Creamy vanilla ice cream draped in rich homemade hot fudge, topped with fluffy whipped cream, crunchy nuts, and a cherry for a classic, indulgent American diner dessert.

Ingredients

Premium vanilla ice cream 4 cups (600g)
70% dark chocolate, finely chopped 170g (6 oz)
Heavy whipping cream (for fudge) 120ml (1/2 cup)
Unsalted butter 2 tablespoons (28g)
Packed light brown sugar 50g (1/4 cup)
Light corn syrup 2 tablespoons (30ml)
Pure vanilla extract 1 teaspoon (5ml)
Chilled heavy whipping cream (for topping) 120ml (1/2 cup)
Roasted salted peanuts, chopped 40g (1/4 cup)
Maraschino cherries (with stems) 4 pieces

Steps

1

Chill sundae glasses

Place 4 tall clear glass sundae cups in the freezer for 10 minutes to chill, which slows ice cream melting during assembly. Arrange all measured ingredients on your counter within easy reach to streamline prep.

Step 1
step1:Chill sundae glasses
2

Cook fudge base

In a small heavy-bottomed saucepan set over medium-low heat, combine 120ml heavy cream (for fudge), 28g unsalted butter, 50g packed light brown sugar, and 30ml light corn syrup. Stir constantly with a wooden spoon for 3 to 4 minutes until sugar fully dissolves and the mixture reaches a gentle, slow simmer; do not let it come to a rolling boil.

Step 2
step2:Cook fudge base
3

Finish hot fudge

Remove the saucepan from heat immediately, add 170g finely chopped dark chocolate, and let it rest undisturbed for 2 minutes to soften from residual heat. Stir slowly and evenly for 1 minute until chocolate is fully incorporated, then mix in 1 teaspoon vanilla extract. Let fudge cool for 5 minutes until it is thick enough to evenly coat the back of a spoon.

Step 3
step3:Finish hot fudge
4

Whip fresh cream

Add 120ml chilled heavy whipping cream (for topping) to a cold medium mixing bowl. Beat with a hand mixer on medium speed for 2 minutes until soft, billowy peaks form that hold their shape without drooping; stop immediately to avoid overwhipping into grainy butter.

Step 4
step4:Whip fresh cream
5

Scoop ice cream

Remove the chilled sundae cups from the freezer. Place two ½-cup (75g) firm scoops of vanilla ice cream into each cup, pressing gently to leave ½ inch of empty headspace at the top of the glass for toppings.

Step 5
step5:Scoop ice cream
6

Assemble and serve

Pour 2 tablespoons of warm hot fudge over the ice cream in each cup, letting it drizzle down the sides of the scoops. Top each sundae with a 2-tablespoon dollop of fresh whipped cream, 1 tablespoon of chopped roasted salted peanuts, and 1 stemmed maraschino cherry placed in the center of the whipped cream. Serve immediately.

Step 6
step6:Assemble and serve

Tips

1.Never heat the fudge over high heat, as this can cause the chocolate to seize and turn grainy instead of staying smooth and velvety.
2.If leftover fudge thickens too much for serving, rewarm it in 10-second bursts at 50% microwave power, stirring between bursts, until it reaches a pourable consistency.
3.Customize toppings to taste: swap peanuts for rainbow sprinkles, crushed waffle cones, sliced bananas, or salted caramel drizzle for a personalized treat.

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Hot Fudge Sundae:Frequently Asked Questions

1.Can I use milk chocolate instead of 70% dark chocolate for the homemade hot fudge?
You can, but 70% dark chocolate strikes the ideal rich, not-too-sweet balance to cut through creamy vanilla ice cream and sweet toppings. If you swap in milk chocolate, reduce the light brown sugar by 2 tablespoons to avoid cloying sweetness, and stir gently as it melts to keep the fudge silky and smooth.
2.How do I prevent my homemade hot fudge from turning out grainy?
Grainy fudge almost always comes from undissolved sugar or stray sugar crystals seeding the whole batch. Prevent this by stirring brown sugar, cream, and butter over low heat until sugar fully dissolves before bringing to a gentle simmer, and avoid scraping the pan sides as it cooks—those stray crystals cause unpleasantly gritty texture.
3.How far in advance can I make the hot fudge, and what’s the best way to reheat it?
You can store fully cooled hot fudge in an airtight glass jar in the fridge for up to 2 weeks. To reheat, scoop your desired portion into a heatproof bowl and microwave in 15-second bursts, stirring between each, until it’s thick but pourable. You can also reheat it over the lowest stovetop heat, stirring constantly, to avoid scorching the chocolate.
4.What nuts work best for that classic diner crunch, and should I toast them first?
The iconic diner choice is dry-roasted salted peanuts, but chopped toasted pecans, walnuts, or almonds work beautifully too. If using raw nuts, toast them for 5 to 7 minutes in a 350°F oven before chopping—this amplifies their warm, nutty flavor, adds extra crispness, and the light salt cuts through the sweet, rich sundae toppings.
5.Why does my whipped cream turn watery when I top my sundaes?
Watery whipped cream usually happens if you overwhip it (it will eventually separate into butter and whey) or if you add it to partially melted ice cream that warms the cream too fast. For stable, fluffy topping, whip cold heavy cream just to soft peaks, and assemble sundaes immediately after scooping ice cream to keep everything cold and set.
6.Do I really need to use premium vanilla ice cream, or will budget store-bought work?
You can use whatever vanilla ice cream you enjoy, but premium options have higher cream content and less added air, so they melt slower and have a richer, creamier base that stands up to thick hot fudge. Budget ice creams tend to melt faster and have an icier texture that can get lost under the weight of all the toppings.

Comments (19)

3 days ago

OMG this hot fudge is a total game changer! I made it for our weekly family movie night last weekend and my kids went back for seconds (okay, thirds, no judgment). It’s so rich and chocolatey, way better than the store-bought jarred stuff I usually grab. Only took me 20 minutes total, which is perfect for a weeknight treat too. 10/10 will be making this all summer long for sundae bars at our backyard cookouts!

2 days ago

Wait did you do a sundae bar for your cookout? I’m planning one for my 4th of July party and was worried the fudge would get too thick if I made it ahead. How did it hold up?

2 days ago

Great question! If you make it ahead, just store it in a sealed jar in the fridge and rewarm it in 15 second bursts in the microwave, stirring between each, until it’s that perfect pourable consistency. It holds up great for parties! So glad you loved it, Liz!

1 week ago

SO good! I’m in a tiny dorm with only a hot plate and a microwave, and I was still able to pull this off no problem. I ate it over vanilla bean ice cream with crushed pretzels on top and I swear I almost cried it was that tasty. Way easier than I thought it would be, even with my super limited kitchen setup.

1 week ago

Love that you made this work in a dorm kitchen! The pretzel crunch addition sounds *chef’s kiss* – sweet and salty is unbeatable on a hot fudge sundae. Thanks for sharing your hack!

5 days ago

Made this after a long day hike last weekend when my friends and I were craving something sweet. We piled it high with vanilla ice cream, chopped walnuts, maraschino cherries, and a dollop of whipped cream. Tasted exactly like the old fashioned sundaes I got at the local soda shop as a kid. Zero complaints from the crew!

2 weeks ago

I’ve been making hot fudge from my mom’s 1950s recipe for 60 years, and I have to say this version is almost as good as hers! I added a tiny extra splash of vanilla like I always do, and it turned out perfectly. My grandkids begged me to send them home with a jar of the fudge after Sunday dinner.

1 week ago

Grandma Pat, how much extra vanilla did you add? I always feel like I’m overdoing it when I add extra to chocolate recipes, lol

1 week ago

Oh honey, I just added about a half teaspoon extra! It doesn’t take much to make that chocolate flavor sing, you can’t go wrong with a little extra vanilla in my book.

2 days ago

Game changer for my weekly meal prep! I make a big batch of this fudge on Sundays, portion it into little reusable containers, and grab one to warm up each night when I want a little sweet treat after the kids go to bed. It saves me from ordering ice cream delivery 3 nights a week, which is saving me so much money!

2 days ago

What a smart meal prep hack! This fudge stays good in the fridge for up to 2 weeks, so it’s perfect for making ahead for quick treats. So happy it’s helping you skip those pricey delivery orders!

1 week ago

Brought this to our neighborhood potluck last week and people were literally hovering around the sundae station the whole night. I set out vanilla, chocolate, and strawberry ice cream plus all the toppings, and everyone kept asking who made the hot fudge. I gave out the recipe link to like 12 different neighbors! Total hit.

yesterday

Wait, I’m the guy who always skips dessert at restaurants because most stuff is too cloyingly sweet for me. My girlfriend made this last night and I actually had two sundaes. The fudge is deep, dark chocolate, not that weird sugary fake chocolate taste from the squeeze bottles. Super impressed, will be requesting this for my birthday next month.

yesterday

Haha he’s not exaggerating! I’ve been trying to get him to like chocolate desserts for 3 years, this recipe finally did it. Thanks for the easy win!

5 minutes ago

Uh, quick question? I tried making this earlier and my fudge got all grainy? Did I do something wrong? It still tasted okay but the texture was off, not smooth like the photos. I was really excited to make this for my partner’s anniversary dessert tonight so I want to get it right on the second try.

just now

Oh no, sorry to hear the texture was off! Grainy fudge usually happens if the sugar crystals form on the side of the pan while it’s cooking. Next time, try brushing down the sides of the pan with a wet pastry brush as it simmers to dissolve any stray sugar crystals, and don’t stir it too vigorously once it starts thickening. You’ve got this for tonight!

just now

Seconding the pastry brush trick! I had the same issue the first time I made it, tried the brush trick the second time and it came out silky smooth, no grain at all. Good luck with the anniversary dessert!

3 days ago

I swapped the heavy cream for full fat coconut cream to make this dairy free for me and my sister who’s lactose intolerant, and it worked SO well! It had that same rich, creamy texture, just a tiny hint of coconut which was actually amazing with the chocolate. We had it over dairy free vanilla ice cream and couldn’t tell the difference from the regular version.

2 days ago

Thanks so much for sharing that dairy free swap! I know so many folks looking for easy adjustments for dietary restrictions, and the coconut cream and chocolate combo sounds absolutely delicious. Will have to test that version myself soon!

2 weeks ago

Made this for the end of season little league team party, set up a make-your-own sundae bar for the 8-10 year olds. Let’s just say there was chocolate on faces, jerseys, the picnic table, you name it – but every single kid said it was the best party treat they’d ever had. Even the other coaches asked for the recipe. Easy, crowd pleasing, zero stress.

30 minutes ago

I made this at 1am after a late shift at the hospital because I was craving something warm and chocolatey, and it came together so fast I was eating it 20 minutes after I got home. I didn’t even have vanilla ice cream, so I poured it over the mint chocolate chip I had in the back of my freezer and it was chef’s kiss. 10/10 for late night snack sessions.

5 minutes ago

Fellow night shift nurse here! I’m adding this to my list of quick post-shift snacks, nothing hits better than warm chocolate after a 12 hour shift. Mint chocolate chip and hot fudge is such an underrated combo, by the way.

1 week ago

Y’all, I added a pinch of sea salt and a tablespoon of bourbon to this fudge and it is LIFE CHANGING. I served it over butter pecan ice cream with candied pecans on top at my book club meeting, and all the ladies were raving so much we barely talked about the book we read. 10/10, will be making this boozy version for every girls’ night from now on.

5 days ago

Wait, the bourbon addition sounds insane! Do you add it while it’s cooking or after you take it off the heat so it doesn’t cook off?

5 days ago

That boozy salted version sounds incredible! For anyone adding alcohol, I recommend stirring it in after you take the pan off the heat so you keep that nice bourbon flavor without it cooking off. Thanks for the amazing add-in idea!

2 days ago

Used vegan butter, coconut cream, and dairy free dark chocolate chips to make this fully vegan, and it was so decadent my non-vegan roommate ate half the batch straight from the jar with a spoon. Super easy to adapt, even for weird random dietary restrictions, and it doesn’t taste “vegan” at all, just like perfect rich hot fudge. Will be making this for Pride month cookouts all month.

2 weeks ago

This tastes exactly like the hot fudge sundaes I used to get at the corner diner when I was a teen in the 70s! Thick, glossy, deep chocolate flavor that doesn’t taste like cheap syrup. I served it at my 50th high school reunion after party over vanilla ice cream with those old fashioned maraschino cherries with the stems, and all my old classmates said it took them right back. Perfect nostalgia hit.

1 week ago

There’s no higher compliment than being compared to that classic diner hot fudge! I love that you got to share this with your old classmates for such a fun, nostalgic event. That makes my day to hear!

2 hours ago

Help! I turned my back for 2 seconds to stop my toddler from drawing on the walls and I think I overcooked the fudge? It’s super thick now, almost like fudge candy instead of pourable sauce. Is there any way to save it, or do I have to start over? I really don’t want to run to the store for more chocolate right now.

30 minutes ago

Girl I’ve been there! Just stir in a little splash of heavy cream (or even regular milk if that’s all you have) a teaspoon at a time while it’s warm, until it thins out to the consistency you want. I’ve saved so many overcooked sauces that way!

30 minutes ago

Tyra’s tip is spot on! Adding small splashes of warm cream and stirring gently will thin it right back out to that perfect pourable texture. No need to run to the store – we’ve all had those toddler distraction moments in the kitchen!

3 days ago

I run a small dessert food truck and I tested this recipe last week to add a loaded hot fudge sundae to our summer menu. It’s so fast to make in big batches, holds up great during service, and every single customer who tried it over the weekend left a 5 star review on our page. People keep coming back specifically for the sundae now! Thanks for the foolproof recipe.

2 days ago

That is so cool to hear! Congratulations on the new menu item hit – I’m so flattered your customers are loving it. Nothing makes me happier than knowing recipes are working for small businesses too!

yesterday

So happy this recipe doesn’t call for any nut ingredients! My son has a severe peanut and tree nut allergy, so it’s so hard to find safe dessert recipes we can make at home without worrying about cross contamination from store bought toppings. We made sundaes last night with sprinkles and whipped cream, and he said it was the best dessert he’s ever had.

yesterday

That makes my heart so happy! It’s so important to have easy, accessible recipes that work for families with food allergies, and I’m thrilled your son got to enjoy a fun, safe treat at home. Pass along a high five to him from me!

just now

Me and my roommates made this for our watch party for the NBA finals last week. We didn’t have any fancy toppings, just the cheap vanilla ice cream from the campus grocery store and some whipped cream from a can, but that fudge made it taste like a fancy restaurant dessert. We ate the whole batch in like 10 minutes. Super easy even for a bunch of guys who can barely make mac and cheese without burning it.

1 week ago

I know, I know, hot fudge isn’t exactly “post workout fuel” but I made this as a planned treat after my half marathon last weekend and it was 100% worth every calorie. I had it over chocolate protein ice cream with sliced bananas and a little peanut butter drizzle, and it was the perfect reward after months of training. Even my fit friends who never eat sweets asked for a bite!