Blueberry Muffins - cooking recipe

Ingredients

1/2 c. butter
1 c. sugar
2 eggs
2 c. flour
2 tsp. baking powder
1/2 tsp. salt
1/2 c. milk
1 tsp. vanilla
1 1/2 c. frozen blueberries
2 tsp. sugar (top)

Preparation

Preheat oven to 375\u00b0.