PREHEAT oven to 400 F.
COMBINE flour, sugar, cinnamon, salt, egg, vanilla and sour cream.
FOLD in peach slices to coat well.
POUR into prepared pie crust.
BAKE 15 minutes; REDUCE heat to 350 F and BAKE 30 minutes more.
COMBINE remaining four ingredients and crumble over warm pie.
BAKE an additional 10 minutes at 400 F.
Per Serving (excluding unknown items): 409 Calories; 20g Fat (42.9% calories from fat); 4g Protein; 56g Carbohydrate; 2g Dietary Fiber; 55mg Cholesterol; 287mg Sodium. Exchanges: 1/2 Grain(Starch); 1/2 Lean Meat; 1/2 Fruit; 0 Non-Fat Milk; 4 Fat; 2 1/2 Other Carbohydrates.