Chess Pie
["1 large unbaked pie shell", "3 Tbsp. flour, divided", "1 1/2 c. sugar plus 1 Tbsp., divided", "1 stick butter or margarine", "3 eggs", "pinch of salt", "1/2 c. buttermilk", "1 to 2 lemons or 3 to 6 Tbsp. lemon juice", "1/2 tsp. vanilla extract"]
["Prick bottom of unbaked pie shell with fork and rub a mixture of 1 tablespoon each flour and sugar into holes (this prevents a soggy crust).", "Bake 10 minutes in preheated 350\u00b0 oven.", "Reduce heat to 300\u00b0."]
["unbaked pie shell", "flour", "sugar", "butter", "eggs", "salt", "buttermilk", "lemons", "vanilla extract"]