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. Beat all ingredients until smooth, 30 seconds in blender on high or 1 minute with hand beater. Pour into plate. Bake until knife inserted in center comes out clean, about 30 minutes. Cool 5 minutes.