Impossible Buttermilk Pie
["1 1/2 c. sugar", "1 tsp. vanilla", "1/2 c. Bisquick baking mix", "2 eggs", "1 c. buttermilk", "1/3 c. butter, melted"]
["Grease pie plate. Heat oven to 350\u00b0. Beat all ingredients until smooth (30 seconds in blender on high). Pour into plate. Bake until knife inserted into center comes out clean."]
["sugar", "vanilla", "Bisquick baking mix", "eggs", "buttermilk", "butter"]