Preheat Oven to 350 degrees F. Grease and flour a 9x13 baking pan.
Sift Flour and baking powder together and set aside.
Cream Butter and 1 cup of sugar together until fluffy. Add eggs and 1/2teaspoon of the vanilla extract, beat well.
Add the flour mixture to the butter 2 tablespoons at a time, mix until well blended. Pour batter into prepared pan.
Bake at 350 degrees for 30 minuted. Pierce cake several times with a fork.Combine whole milk, evaporated milk and condensed milk together. Pour over cooled cake. Whip cream, 1teaspoon vanilla and 1 cup of sugar together until think. Spread over top of cake.