In a mixing bowl, SIFT together flour, salt and sugar; ADD sour cream, egg, vanilla; BEAT well; thoroughly MIX in apples and (if using) raisins.
POUR into 9-inch unbaked pie crust (see recipe).
COOK at 400 F for 15 minutes; REDUCE heat to 350 F; BAKE for an additional 30 minutes; REMOVE pie.
In the meantime, in a small mixing bowl, COMBINE sugar, flour, salt and cinnamon; CUT in butter.
SPRINKLE over pie; INCREASE heat to 400 F; BAKE pie for additional 10 minutes.
Per Serving (excluding unknown items): 187 Calories; 8g Fat (39.2% calories from fat); 2g Protein; 27g Carbohydrate; 1g Dietary Fiber; 37mg Cholesterol; 145mg Sodium. Exchanges: 0 Grain(Starch); 0 Lean Meat; 1/2 Fruit; 0 Non-Fat Milk; 1 1/2 Fat; 1 Other Carbohydrates.