Wicked Blueberry Coffee Cake

From Murder on the Rocks by Karen MacInerney. I haven't tried this yet but it sounds good.

• Ready In: 50 mins
• Yields: 1 cake

Ingredients

• 1⁄2 cup butter (or margarine)
• 1  cup white sugar
• 3  eggs, slightly beaten
• 1⁄2 teaspoon vanilla
• 1  teaspoon baking powder
• 1  teaspoon baking soda
• 1⁄4 teaspoon salt
• 2  cups flour
• 1  cup sour cream (or vanilla yogurt)
• 2  cups blueberries (fresh or frozen)
• 1  cup brown sugar
• 1⁄4 cup butter
• 1⁄4 cup flour

Directions

1. Cream the 1/2 cup of butter and 1 cup of white sugar.
2. Add the eggs, vanilla, baking powder, baking soda, and salt.
3. Add the 2 cups of flour and sour cream alternately to egg mixture, mixing with a spoon.
4. Fold in the blueberries.
5. Pour mixture into a greased 9 x 13 baking pan.
6. In a seperate bowl, cream brown sugar and remaining 1/4 cup butter.
7. Add flour to get a semi-dry mixture.
8. Spread on top of batter.
9. Bake in 350 degree oven for 30 minutes.