I accidentally made this cake thinking it was part of a game I was playing online with friends. I'm happy I made that mistake because it became a family favorite!
Blueberry Buckle

Mix in medium bowl:
4 cups flour
4 teaspoons baking powder
1/2 teaspoon salt

Beat in large bowl:
1/2 cup (4 oz) margarine
1 1/2 cup sugar
2 eggs

Mix flour mixture into egg mixture alternating twice with:
1 cup milk

Stir in:
4 cups (frozen) blueberries

Spread batter in two greased 9x9" pans.

Mix:
1/2 cup (4 oz) margarine
1 cup sugar
2/3 cup flour
1 teaspoon cinnamon

Sprinkle on top of batter.

Bake at 375°F for 60-65 minutes.