Blueberry Streusel Muffins

Ingredients

• 1 3/4 cups all-purpose flour
• 1 tsp baking soda
• 1 tsp baking powder
• 1/2 tsp salt
• 1/2 cup butter
• 1/2 cup granulated sugar
• 1/4 cup brown sugar
• 1/2 cup sour cream
• 2 large eggs
• 1 1/2 tsp vanilla extract
• 1/4 cup milk
• 1 1/2 cups blueberries
• 1/2 cup brown sugar
• 3 tbsp all-purpose flour
• 1 tsp ground cinnamon
• 2 tbsp butter

Steps

1. 1Heat the oven to 425°F and line a 12-cup muffin pan with papers.
2. 2Make the streusel: rub the brown sugar, flour, cinnamon, and cold butter together with your fingertips until it looks like damp sand. Set aside.
3. 3Whisk the flour, baking soda, baking powder, and salt in a bowl.
4. 4Beat the softened butter with both sugars until fluffy, then beat in the sour cream, eggs, and vanilla.
5. 5Fold the dry ingredients in, add the milk, and stir just until the batter comes together. Gently fold in the blueberries.
6. 6Divide the batter between the cups — fill them right to the top — and crumble the streusel over each one.
7. 7Bake 5 minutes at 425°F, then, without opening the door, drop the oven to 350°F and bake 16 to 19 more minutes, until a toothpick comes out clean.
8. 8Cool 10 minutes in the pan before moving to a rack. They freeze perfectly for busy mornings.