Preparation

• Preheat oven to 400 degrees.
  Combine sour cream, flour and brown sugar; add egg and beat well.
  Place one half of the mixture into the graham cracker crust.
  Mix blueberries and 1/2 cup brown sugar together, then spread over sour cream mixture.
  Cover berries with remaining cream mixture.
  Bake for 25 minutes.
  Chill several hours.