Peach Custard Pie

Bahan-bahan (8 porsi)

• 1 9 inch pie crust
• 5 medium peaches (about 5 cups)
• 8 oz sour cream
• 3 large egg yolks
• 1 cup sugar
• 1/4 cup flour
• 1 teaspoon vanilla
• 1/2 cup flour
• 1/4 cup sugar
• 4 tablespoons cold butter