Preheat oven to 350°F. Grease and flour one 9x13 inch baking pan.
Sift flour and baking powder together and set aside.
Cream butter and 1 cup sugar together until fluffy. Add eggs and the 1/2 tsp vanilla; beat well. Add the flour mixture to the butter mixture 2 Tbsp at a time; mix until well blended.
Pour batter into prepared pan. Bake for 30 minutes or until pick inserted in center comes out clean. Pierce cake several times with a fork and allow to cool.
Combine the whole milk, condensed milk, and evaporated milk together. Pour over the top of the cooled cake.
Lightly whip the whipping cream with 1 cup sugar and 1 tsp vanilla together until thick. Spread over the top of cake. Refrigerate until ready to serve. Top with sliced strawberries or some toasted nuts if desired.