Title: Blueberry sour cream cake
 Categories: Cakes
      Yield: 10 Servings
 
      1 tb Butter
  1 1/2 c  Flour
    1/2 c  Sugar
    1/2 c  Butter, at room temperature
  1 1/2 ts Baking powder
      1    Egg
  1 1/2 ts Vanilla
      4 c  Fresh or frozen blueberries
           Thawed
           Custard
      2 c  Sour cream
      2    Egg yolks
    1/2 c  Sugar
      1 ts Vanilla
 
  Position rack in center of oven and preheat oven to 350'. Generously
  butter 9-or 10-inch springform pan. In a large bowl, combine flour,
  sugar, 1/2 cup butter, baking powder, and vanilla and mix thoroughly.
  Turn into prepared pan and sprinkle evenly with blueberries. Combine
  sour cream, egg yolks, sugar, and vanilla. Blend well. Pour over
  blueberries. Bake 1 hour or until edges of custard are lightly
  browned. Serves 10 to 12.