Magically makes it's own crust! Coconut pie

1/2 cup Bisquick
3/4 cup sugar
4 eggs
2 cup milk
1 cup flaked coconut
1 tsp. vanilla
1 TBS. butter, softened

1/2 cup Bisquick

Combine all ingredients and pour into 9 inch buttered pie pan. Bake at 400 degrees for 25-30 minutes until custard sets. Like magic it layers into crust, custard, coconut topping. Cool.