Bisquick Impossible Buttermilk Pie  

1 1/2 cups sugar
1 cup buttermilk
1/2 cup Bisquick baking mix
1/3 cup melted butter
1 teaspoon vanilla
3 eggs

Heat oven to 350ºF. Grease pie plate. Beat all ingredients until smooth, 30 seconds in the blender on high, or 1 minute with hand beater. Pour into pie plate. Bake until knife inserted in center comes out clean, about 30 minutes. Cool 5 minutes. Serve with fresh fruit, if desired.