1. Preheat oven to 350F. 2. In a medium bowl, gently stir together berries and sugar. Let sit 15 minutes. Press one crust into the bottom of a 9" pie plate. 3. In a meduim bowl, mix together the flour and salt. Mix in the sour cream, eggs and Vanilla. Add the gooseberry and sugar mixture and stir to coat evenly. 4. Bake for 55 minutes in the oven. Cool to room temperature and refridgerate before serving.