Blackberry Crumble Muffins
Soft, tender blackberry muffins with a zesty lemon flavor and a buttery crumble topping. Each bite is packed with juicy berries, balanced sweetness, and a hint of tang, making them perfect for breakfast, brunch, or an afternoon snack.
Equipment
- 12-cup muffin pan
- Mixing bowls (medium and large)
- Handheld or stand mixer
- Rubber spatula
- whisk
- Fine mesh strainer or cheesecloth
- Measuring Cups and Spoons
- Spoon or piping bag for drizzle
Ingredients
Crumble Topping:
- 2 ½ tbsp unsalted butter melted
- ½ cup all-purpose flour regular or gluten-free
- 2 tbsp granulated sugar
- 1 tbsp brown sugar packed
- ¼ tsp salt
- ⅛ tsp ground cinnamon
Blackberry Muffins:
- 2 ¾ cups all-purpose flour regular or gluten-free
- 2 ½ tsp baking powder
- ½ tsp baking soda
- ¾ tsp salt
- ½ cup unsalted butter softened
- ½ cup granulated sugar
- ¼ cup brown sugar packed
- 2 large eggs room temperature
- 1 ½ tsp vanilla extract
- ½ tsp lemon zest freshly grated
- 1 ½ cups full-fat sour cream room temperature
- 1 ¾ cups fresh blackberries halved or quartered
Blackberry Drizzle:
- ½ cup fresh blackberries
- 1 cup powdered sugar
Instructions
- Prepare the Crumble Topping: In a small mixing bowl, combine the melted butter, all-purpose flour, granulated sugar, brown sugar, salt, and ground cinnamon. Using a fork, mix the ingredients together until they form a coarse, crumbly texture. If needed, gently press the mixture between your fingertips to create slightly larger clumps. Cover the bowl and place it in the refrigerator while you prepare the muffin batter—this helps the crumble maintain its texture during baking.
- Preheat the Oven and Prepare Pan: Preheat your oven to 400°F (205°C). Grease a standard 12-cup muffin pan generously with butter or nonstick cooking spray. You can also use paper liners, but note that this may slightly reduce the volume of each muffin. Make sure the pan is evenly coated to prevent sticking and ensure the muffins come out cleanly.
- Mix Dry Ingredients for Muffins: In a medium bowl, whisk together the all-purpose flour, baking powder, baking soda, and salt until thoroughly combined. This step ensures that the leavening agents are evenly distributed, which helps the muffins rise evenly and prevents pockets of baking soda or powder in the finished muffins.
- Coat Blackberries in Flour: Remove about 1 ½ tablespoons of the prepared flour mixture and place it in a small bowl with the chopped blackberries. Gently toss the berries until they are fully coated with flour. This helps prevent the berries from sinking to the bottom of the muffins during baking and ensures an even distribution throughout the batter.
- Cream Butter and Sugars: In a large mixing bowl or the bowl of a stand mixer, add the softened butter, granulated sugar, and brown sugar. Using a handheld mixer or stand mixer, beat on medium-high speed until the mixture becomes light, creamy, and fluffy. This process incorporates air into the butter, which contributes to the muffins’ soft and tender texture. Scrape down the sides of the bowl as needed to ensure all butter and sugar are evenly combined.
- Incorporate Eggs and Flavorings: Add the eggs, vanilla extract, and freshly grated lemon zest to the butter-sugar mixture. Beat on medium speed until the mixture is smooth, pale, and fully combined. Scrape the sides of the bowl again to ensure no streaks remain. The lemon zest will add a subtle brightness that enhances the flavor of the blackberries.
- Alternate Adding Flour and Sour Cream: Reduce the mixer speed to low. Add about one-third of the flour mixture and mix just until mostly incorporated. Then, add half of the sour cream and mix gently. Continue alternating the remaining flour and sour cream in thirds, finishing with the last portion of flour. Mix each addition only until combined to prevent overmixing, which can make the muffins dense.
- Fold in the Blackberries: Divide the floured blackberries into two portions. Gently fold each portion into the batter using a rubber spatula. Fold carefully to avoid breaking the berries, but ensure they are evenly distributed. The batter should be thick and slightly lumpy, with no visible streaks of dry flour.
- Fill Muffin Cups and Add Crumble: Spoon the muffin batter evenly into the prepared pan, filling each cup completely to create tall, bakery-style muffins. Sprinkle the prepared crumble topping evenly over each muffin, pressing lightly with your fingertips or the back of a spoon to help it adhere to the batter. This topping will bake into a crisp, sweet layer that adds texture and flavor.
- Bake the Muffins: Place the muffin pan in the preheated oven. Bake at 400°F (205°C) for 10 minutes to give the muffins an initial rise. After 10 minutes, reduce the oven temperature to 350°F (175°C) and continue baking for 13–15 minutes, or until the muffins are golden on top, puffy, and a toothpick inserted in the center comes out clean. Avoid overbaking, as this can dry out the muffins.
- Cool the Muffins: Allow the muffins to cool in the pan for at least 15–20 minutes. This brief cooling period helps them set so they won’t break apart when removed. Transfer the muffins carefully to a wire rack to cool completely before adding any drizzle or icing.
- Prepare the Blackberry Drizzle: In a small bowl, mash the blackberries using a fork or cocktail muddler until smooth. Strain the mashed berries through a fine mesh strainer or cheesecloth into a clean bowl, pressing gently to extract juice while leaving seeds behind. Measure 2 tablespoons of the juice and combine with powdered sugar, whisking until smooth. The consistency should be thick enough to hold its shape when drizzled; add more powdered sugar if needed.
- Drizzle Over Muffins: Once the muffins have cooled completely, use a spoon or a piping bag fitted with a small round tip to drizzle the blackberry icing over the tops. Allow the drizzle to set for a few minutes before serving, so it forms a slightly firm layer. The final touch adds both flavor and visual appeal, making the muffins look as delightful as they taste.
Notes
- For best results, use fresh, ripe blackberries. If using frozen, thaw and drain them thoroughly to avoid adding excess moisture to the batter.
- Sour cream adds richness and moisture, but Greek yogurt is an excellent substitute if needed.
- Using room-temperature eggs and sour cream helps the batter come together smoothly and ensures even baking.
- To prevent muffins from sticking, lightly grease the pan or use high-quality paper liners.
- Flouring the berries before folding them into the batter prevents them from sinking to the bottom and ensures each muffin has evenly distributed fruit.
- Adjust sugar levels slightly if using very sweet or tart berries, balancing sweetness to taste.
