CAKE:

1 tbs butter
1 egg
1 cup sugar
1 cup sweetened condensed milk
2 cups flour
2 heaping tbs baking powder
vanilla extract

FILLING:

1 egg, beaten
1/4 cup flour OR cornstarch
1 cup milk plus a little extra
1/2 tsp vanilla

CAKE: cream together the butter and egg. gradually add the sugar, sweetened condensed milk, flour, baking powder, and vanilla to taste. pour into two greased 8″ layer pans. bake at 350 degrees for 35-40 minutes. cool. spread filling between layers and on top of cake.

FILLING: stir flour or cornstarch together with beaten egg; moisten with a little milk. bring 1 cup milk to a boil; stir in flour and egg mixture until thick. flavor with vanilla.