Boston Cream Pie (MA)
intro
Iconic New England layered dessert of fluffy vanilla sponge, silky vanilla pastry cream, and glossy chocolate ganache—despite its name, it is a cake, not a pie.
Ingredients
Steps
Bake vanilla sponge
Preheat oven to 175°C (350°F), then grease and line a 9-inch round cake pan with parchment paper. In a large mixing bowl, whisk 190g all-purpose flour, 1.5 teaspoons baking powder, 1/2 teaspoon fine sea salt, and 200g granulated sugar until evenly combined. Add 3 whole large eggs, 113g melted and cooled unsalted butter, 180ml whole milk, and 2 teaspoons vanilla extract, whisking just until smooth with no dry lumps remaining. Pour batter into the prepared pan, bake on the middle oven rack for 25-28 minutes, until a toothpick inserted into the center comes out with only 1-2 dry crumbs. Cool in the pan for 10 minutes, then transfer to a wire rack to cool completely to room temperature (about 30 minutes) before assembly.
Cook pastry cream
Pour 480ml whole milk into a medium heavy-bottomed saucepan, heat over medium-low heat for 4-5 minutes until small bubbles form around the edges and the milk just starts to steam (do not bring to a rolling boil). While milk heats, whisk 4 large egg yolks, 100g granulated sugar, 3 tablespoons cornstarch, and 1/8 teaspoon fine sea salt in a heatproof bowl for 2 minutes until the mixture is pale yellow and slightly thick. Slowly pour 1/3 of the hot milk into the yolk mixture while whisking constantly to temper the eggs, then pour the tempered yolk mixture back into the saucepan with the remaining milk. Cook over medium-low heat, whisking nonstop, for 3-4 minutes until the custard thickens to a pudding-like consistency that coats the back of a spoon. Remove from heat, stir in 28g unsalted butter and 1 teaspoon vanilla extract until fully melted and smooth.
Chill pastry cream
Pour the warm pastry cream into a shallow glass bowl, press a sheet of plastic wrap directly onto the entire surface of the custard (not just over the bowl rim) to prevent a tough skin from forming as it cools. Place the bowl in the refrigerator for 1 full hour, until the cream is completely chilled and firm to the touch; do not stir the cream during chilling to preserve its smooth, silky texture.
Assemble cake layers
Once the sponge is fully cooled and pastry cream is chilled, use a long serrated bread knife to slice the sponge horizontally into two even, equal-thickness layers. Set the bottom layer on a cake stand or flat serving plate, scoop all of the chilled pastry cream onto the center of the bottom layer, and spread it evenly with an offset spatula, leaving a 1/4-inch border around the edge to prevent cream from oozing out when the top layer is added. Place the top sponge layer directly over the cream, press down gently to secure the layers, and wipe away any excess cream that seeps out from the sides with a paper towel.
Make chocolate ganache
Pour 120ml heavy cream into a small saucepan, heat over medium-low heat for 3-4 minutes until small bubbles form around the pan edges (do not boil). Place 170g chopped semi-sweet chocolate and 14g unsalted butter in a heatproof mixing bowl, pour the hot cream over the chocolate, and let the mixture rest undisturbed for 5 minutes to melt the chocolate. Stir slowly with a rubber spatula, starting from the center and working outward, until the ganache is completely smooth, glossy, and free of lumps. Let the ganache cool for 10 minutes at room temperature until it reaches a thick, pourable consistency.
Glaze and set cake
Pour the slightly cooled ganache directly onto the center of the top cake layer, use a clean offset spatula to spread the ganache gently outward so it flows evenly over the top edge and drips down the sides of the cake in natural, even drips. Do not spread the ganache too thin across the top. Transfer the assembled cake to the refrigerator for 15 minutes to let the ganache set firmly before slicing into 8 equal pieces to serve.
Tips
2.Never assemble the cake with warm sponge or warm pastry cream, as the heat will melt the cream, cause layers to slide, and lead to a soggy, unstable cake.
3.Press plastic wrap directly against the surface of warm pastry cream instead of covering the bowl loosely; this prevents a dry, rubbery skin from forming on the custard as it chills.
OMG I was so intimidated to make Boston cream pie because I thought it’d be way too fussy, but this recipe walked me through every step! The pastry cream came out so silky, no lumps at all. My whole family devoured half of it after Sunday dinner. Only thing I messed up was the ganache drip — I poured it too early and it ran all down the sides, oops. Still tasted incredible though!
Brought this to my office potluck yesterday and people were literally coming up to ask for the recipe before I even left! I made it the night before so the custard had extra time to set, which I think made it even better. The chocolate ganache is so rich and not too sweet, which balances the vanilla cream perfectly. 10/10 will be making this for every family gathering from now on.
Swapped the all purpose flour for a 1:1 gluten free baking blend and it turned out SO good! I was worried the sponge would be dense, but it was light and fluffy just like the regular version. My husband who doesn’t even like gluten free desserts went back for a second slice. Will be keeping this in my regular rotation!
Wait, is it normal for the pastry cream to seem really thin right after I cook it? I’m panicking a little because I’m making this for my girlfriend’s birthday tomorrow and it looks like vanilla soup right now 😅
I’ve tried three different Boston cream pie recipes over the years and this one is hands down the best. The sponge cake has that perfect tender, buttery crumb, no weird dry spots like other recipes I’ve tested. My kids loved helping me spread the pastry cream in the middle, they thought it was the coolest thing. We added a little extra chocolate shavings on top for fun!
Was worried this wouldn’t hold up for meal prep but I stored individual slices in airtight containers in the fridge and they tasted perfect for 3 whole days! The cake didn’t get soggy at all, which was my biggest fear. Perfect for a little weekday treat after work without having to bake every night.
Grew up outside Boston and I’m super picky about Boston cream pie — a lot of recipes get the pastry cream too starchy or the cake too dry, but this one tastes exactly like the ones I got from the neighborhood bakery growing up. Total nostalgia trip. My grandma even approved, which is the highest possible rating if you ask me.
Okay so I totally messed up the pastry cream the first time — I curdled the eggs because I had the heat too high 😂 Tossed it, started over, paid way more attention tempering the eggs, and it came out perfect! Don’t be like me and rush that step, y’all. End result was so worth the extra effort.
Has anyone tried making this vegan? I want to make it for my sister’s birthday and she’s dairy free, trying to figure out what swaps work best without messing up the texture.
I cut the sugar in the pastry cream by 2 tablespoons because I don’t love super sweet desserts, and it was perfect for my taste. The ganache is already rich enough that the slightly less sweet cream balanced it out perfectly. Don’t be scared to adjust the sugar to your preference, it doesn’t mess with the texture at all.
Made this for my son’s end of season baseball team party and the kids went crazy for it. I thought they’d turn their noses up at something that wasn’t a boxed cake mix, but every single kid asked for a second slice. Even the coaches asked for the recipe! Total home run (pun very intended).
Wait a second, Boston cream pie is CAKE? I grew up thinking it was an actual pie this whole time, I was so confused when I saw the recipe has cake layers. Mind blown. Anyway, made it last night and it’s SO good, I don’t even care that it’s not pie. The chocolate ganache is to die for.
I was worried this would require a bunch of fancy expensive ingredients, but I already had almost everything in my pantry! The only thing I had to pick up was heavy cream for the ganache and pastry cream. Way more accessible than I thought it would be for a “fancy” dessert, and it tastes like it came from a high end bakery. 10/10 for value.
I have a track record of completely ruining every custard-based dessert I try, so I went into this fully expecting to mess it up. Followed the directions to the LETTER, set a timer for every step, and it actually worked! The cream set perfectly, the cake was fluffy, the ganache was shiny. I’m so proud of myself right now, honestly.
I added a tiny pinch of cayenne pepper to the ganache because I love a little spicy kick with my chocolate, and it was chef’s kiss. You can’t really taste the spice, it just makes the chocolate flavor taste deeper and richer. Highly recommend giving it a try if you like that little extra something.
Taste was great, but 2 hours total cook time? Felt like it took forever between baking the cakes, making the cream, waiting for everything to chill, then making the ganache. I’m used to quicker desserts, so this was a little more time consuming than I planned for a weeknight. Tasted amazing, don’t get me wrong, just wish I’d saved it for a weekend instead of trying to make it after work.