Blackberry Lime Muffin
intro
Bright, tender quick-bread muffins bursting with juicy summer blackberries and zingy lime, topped with crisp turbinado sugar for a sweet, portable treat.
Ingredients
Steps
Prep oven and muffin tin
Preheat your oven to 200°C (400°F) with a rack positioned in the middle. Line a 12-cup standard muffin tin with paper liners, or lightly grease each cup with nonstick spray or melted butter to prevent sticking.
Mix dry ingredients
In a large mixing bowl, whisk together 240g all-purpose flour, 100g granulated sugar, 8g baking powder, 3g fine sea salt, and 2 tablespoons of fresh lime zest for 30 seconds until fully combined, with no visible clumps of baking powder remaining.
Whisk wet ingredients
In a separate medium bowl, whisk the room-temperature large egg until completely smooth, then add 180ml whole milk, 57g cooled melted butter, 30ml fresh lime juice, and 5ml vanilla extract. Whisk for 20 seconds until the mixture is fully homogeneous, with no streaks of unincorporated egg visible.
Fold batter and berries
Pour the entire wet ingredient mixture into the bowl of dry ingredients. Use a silicone spatula to fold the batter gently for only 10-12 strokes, until just combined—lumps in the batter are expected, and overmixing will create tough muffins. Add 150g of the blackberries, folding 2-3 more times to distribute them evenly, reserving the remaining 30g of berries for topping.
Portion batter into tin
Scoop the batter evenly into the prepared muffin tin, filling each paper liner 2/3 full (approximately 3 tablespoons of batter per cup). Top each portion of batter with 2-3 of the reserved blackberries, then sprinkle 1/2 teaspoon of turbinado sugar over the top of each muffin to create a crisp, sweet crust.
Bake and cool muffins
Place the filled muffin tin in the preheated oven, immediately reduce the oven temperature to 190°C (375°F), and bake for 18-20 minutes. Muffins are done when the tops are golden domed, a toothpick inserted into the center comes out with 1-2 moist crumbs (not wet batter), and the tops spring back when lightly pressed. Let muffins cool in the tin for 5 minutes, then transfer them to a wire rack to cool for 10 minutes before serving.
Tips
2.Pat rinsed blackberries completely dry with paper towels before adding them to the batter; excess surface water will make the surrounding batter soggy and create dense, mushy pockets in the finished muffins.
3.For tall, bakery-style domed tops, do not skip the initial high oven temperature: the burst of high heat when you first put the muffins in creates fast "oven spring" that makes the tops rise high before the crumb sets, before you lower the temperature to cook the muffins through evenly.

OMG these muffins are SO good! I whipped them up for my kid's soccer team snack this weekend and every single parent asked for the recipe. The lime zest cuts the sweetness perfectly, and the blackberries stayed juicy even after I baked them a couple minutes over (oops, got distracted by the dog barking at the mailman). Total game changer for quick weekend breakfasts too!
Super easy recipe, perfect for weekly meal prep! I bake a batch on Sunday and grab one on my way to work all week, which saves me so much money on overpriced coffee shop muffins. The only swap I made was using frozen blackberries since fresh were wild expensive at my grocery store this week, and they still turned out perfectly moist. No dry, crumbly muffin garbage here, thank goodness!
I'm so excited to bake these this afternoon! Quick question before I start: can I use key limes instead of regular Persian limes for the zest and juice? I have a whole bag of key limes from my neighbor's tree that I need to use up, and I've been craving blackberry muffins all week. Don't want to mess up the bright lime flavor balance though!