4 eggs
2 c. sugar
1/2 c. buttermilk
1/2 stock butter
1 tsp. vanilla
dash of cinnamon

Combine all ingredients; stir until mixture is smooth and well-blended. Sprinkle cinnamon over an unbaked pie crust, pour in filling.
Bake at 375 degrees for 30-40 minutes or until pie is firm in the middle.