Fluffy Blueberry Muffins Streusel (Printable)

Tender muffins bursting with juicy blueberries and topped with a buttery, crunchy streusel.

# What You’ll Need:

→ Muffins

01 - 2 cups all-purpose flour
02 - 2 teaspoons baking powder
03 - 1/2 teaspoon baking soda
04 - 1/2 teaspoon salt
05 - 1/2 cup unsalted butter, melted and cooled
06 - 3/4 cup granulated sugar
07 - 2 large eggs, room temperature
08 - 1 teaspoon vanilla extract
09 - 1/2 cup whole milk
10 - 1/2 cup sour cream or plain yogurt
11 - 1 1/2 cups fresh or frozen blueberries (do not thaw if frozen)

→ Streusel Topping

12 - 1/3 cup all-purpose flour
13 - 1/3 cup packed light brown sugar
14 - 1/4 teaspoon ground cinnamon
15 - 1/4 cup unsalted butter, cold and cubed

# Directions:

01 - Preheat the oven to 400°F. Line a 12-cup muffin tin with paper liners or grease it thoroughly.
02 - Combine flour, brown sugar, and cinnamon in a small bowl. Cut in cold butter using a fork or pastry cutter until mixture resembles coarse crumbs, then refrigerate.
03 - Whisk together flour, baking powder, baking soda, and salt in a medium bowl.
04 - In a large bowl, whisk melted butter and sugar until combined. Add eggs one at a time, beating thoroughly after each. Stir in vanilla extract, milk, and sour cream until smooth.
05 - Gently fold dry ingredient mixture into wet ingredients until just incorporated; avoid overmixing.
06 - Toss blueberries with 1 tablespoon flour to prevent sinking, then fold them gently into the batter.
07 - Divide batter evenly among muffin cups. Generously sprinkle streusel topping over each.
08 - Bake for 20 to 22 minutes until toothpick comes out clean and tops turn golden brown.
09 - Let muffins cool in the tin for 5 minutes, then transfer to a wire rack to cool completely.

# Expert Hints:

01 -
  • The streusel topping adds a buttery crunch that makes these taste like they came from an expensive cafe.
  • Theyre fluffy and moist without being heavy, and the blueberries stay sweet and juicy inside.
02 -
  • Do not overmix the batter or your muffins will be dense and chewy instead of light and fluffy.
  • Tossing the blueberries in flour really does keep them from sinking, I learned this after a batch where all the berries ended up at the bottom.
03 -
  • Use cold butter for the streusel and work quickly so it doesnt melt before baking.
  • Fill the muffin cups generously for those big bakery-style domed tops.
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