1 1/2 c. sugar
1 c. buttermilk
1/2 c. Bisquick
1/3 c. butter, melted
1 tsp. vanilla
3 eggs

Heat oven to 350 degrees. Grease pie plate with some butter. Beat all ingredients until smooth (30 seconds in blender on high). Bake until knife inserted in center comes out clean, about 30 minutes.