¾ cup sugar
¼ cup butter
1 egg
½ cup milk
2 cups flour
2 tsp. baking powder
½ tsp. salt
2 cups blueberries
Topping:
½ cup sugar
½ tsp. cinnamon
¼ cup butter
Combine until crumbly.  Set aside
Cake:
Combine sugar, butter, egg and milk;  mix well.  Blend in flour, baking powder and ssalt.  Stir in blueberries.
Pour into a 9by 9 inch pan.  Sprinkle topping over batter.  Bake at 375f for 30-35 minutes.