1/4cupunsalted butter, cold and cut into small cubes
Instructions
Make the Muffins
Preheat oven to 350°F. Line muffin pan with cupcake liners.
Beat 1/2 cup butter and 1 cup white sugar until light and fluffy. Beat in egg and vanilla. In a small bowl, whisk together 2 cups flour, baking powder, and salt. Add flour mixture and milk to batter and beat until smooth. Stir in 1 cup of blueberries.
Fill cupcake cups about 2/3 full with batter.
Make the Streusel
Make streusel. Combine all ingredients into food processor and mix or use a fork, until mixture becomes crumbly. Sprinkle streusel generously across each muffin. Take additional blueberries and place a few on top of each muffin, press gently into the dough so that the blueberries don't fall out.
Bake for about 20 minutes until a golden brown and toothpick inserted comes out clean.
The nutrition information provided are only estimates based on an online nutritional calculator. This is not a comprehensive list of all the nutrients in the recipe (i.e., does not include vitamins, cholesterol, etc). I am not a certified nutritionist. Please consult a nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.