Blueberry Mini Muffins recipe.

Ingredients
1 cup butter, softened
2 cups sugar
1 cup buttermilk
2 teaspoons vanilla extract
5 cups all-purpose flour
1 teaspoon baking soda
1 teaspoon baking powder
3/4 teaspoon salt
3 cups fresh or frozen blueberries
Additional sugar

Directions
In a mixing bowl, cream butter and sugar. Add eggs, buttermilk and vanilla; mix well. Combine flour, baking soda, baking powder and salt; stir into the creamed mixture just until moistened. Fold in blueberries (batter will be thick).
Fill greased or paper-lined miniature muffin cups with about a tablespoon of batter. Sprinkle with sugar if desired. Bake at 400 degrees F for 10-15 minutes or until a toothpick comes out clean. Cool for 5 minutes before removing from pan to a wire rack.