Blueberry Sour-Cream Cake - cooking recipe

Ingredients

1 1/2 c. all-purpose flour
1 c. sugar
1 stick (1/4 lb.) butter (room temperature)
1 1/2 tsp. baking powder
1 egg, plus 2 egg yolks
2 tsp. vanilla
1 qt. fresh blueberries, washed and drained
2 c. sour cream

Preparation

Position rack in the center of the oven.
Preheat oven to 350\u00b0.