4 tbsp. (1/2 stick) butter, softened
1 tsp. vanilla extract
1 c. flour
1 tsp. baking powder
1 1/2 c. fresh or frozen blueberries
1/2 c. sugar
1 egg
1/4 tsp. salt
1/3 c. milk

STREUSEL TOPPING:

1/3 c. flour
1/2 c. sugar
1/4 tsp. nutmeg
4 tbsp. (1/2 stick) butter
1/2 tsp. cinnamon