Buttermilk Pie
["1/2 c. Bisquick baking mix", "1 1/2 c. sugar", "1/3 c. melted margarine or butter", "1 c. buttermilk", "1 tsp. vanilla", "3 eggs"]
["Heat oven to 350\u00b0. Spray pie pan with Pam cooking spray."]
["Bisquick baking mix", "sugar", "margarine", "buttermilk", "vanilla", "eggs"]