Coffee Cake Muffins

Steps

1. 1

   Preheat the oven to 430°F (220 °C) (220°C (425 °F)). Line a muffin pan with muffin liners.

2. 2

   Prepare the crumb topping. In a bowl, combine the softened butter, all-purpose flour, brown sugar, granulated sugar, cinnamon, and salt. Mix with a fork or your fingers until large crumbs form, then set aside.

3. 3

   Prepare the cinnamon filling. In a small bowl, mix the brown sugar, cinnamon, and salt together, then set aside.

4. 4

   Prepare the batter. In a large bowl, whisk the melted butter and granulated sugar until smooth.

5. 5

   Whisk the egg and vanilla extract into the butter mixture until incorporated.

6. 6

   Add the sour cream, baking powder, and salt, and mix until fully combined.

7. 7

   Gently fold in the all-purpose flour just until no dry streaks remain; do not overmix.

8. 8

   Fill each muffin liner about halfway with batter.

9. 9

   Sprinkle a layer of cinnamon filling over the batter in each liner.

10. 10

    Add a small spoonful of the remaining batter on top of the cinnamon filling, then generously cover each muffin with the crumb topping.

11. 11

    Bake at 430°F (220 °C) (220°C (425 °F)) for 5–6 minutes.

    Start 6-minute timer
12. 12

    Without opening the oven, reduce the temperature to 375°F (190 °C) (190°C (375 °F)).

13. 13

    Continue baking for 24–28 minutes, or until the muffins are set.

    Start 28-minute timer
14. 14

    Let the muffins cool in the pan for 5 minutes, then transfer them to a wire rack.

    Start 5-minute timer