Blueberry Coffee Cake

I sent my mom a picture of the blueberry coffee cake I had made for dinner yesterday
and she responded that she had made the same dish for breakfast!
Great minds think alike - and this is one delicious coffee cake!

½ cup butter
1 cup sugar
3 eggs, lightly beaten
1 tsp. baking powder
¼ tsp. salt
1 tsp. soda
2 cups flour
1 cup sour cream
2 cups fresh or frozen blueberries

Topping
1 cup brown sugar
¼ cup butter
¼ cup flour

Preheat oven to 350 degrees. Cream butter and sugar.
Add eggs, baking powder, salt and soda. Alternating, add flour and sour cream.
Fold in blueberries. Pour into a well buttered 9x13 pan.
For the topping: Cream brown sugar and butter.
Add flour to get a semidry, lumpy mixture.
Spread on top of batter. Bake for 40 minutes
or until toothpick inserted in the center comes out clean.
The topping should melt and partially sink into the batter.