Decadent Brownie Pie
["1 (9-inch) unbaked pie shell", "1 c. semi-sweet chocolate chips", "1/4 c. margarine", "1 (14 oz.) can sweet condensed milk", "1/2 c. biscuit baking mix", "2 eggs, beaten", "1 tsp. vanilla", "1 c. chopped nuts"]
["Bake pastry shell for 10 minutes at 375\u00b0 and remove from oven.", "Reduce temperature to 325\u00b0."]
["shell", "semi-sweet chocolate chips", "margarine", "sweet condensed milk", "biscuit baking mix", "eggs", "vanilla", "nuts"]