Tasty Tuesday ( Peanut Butter Tast Cake)

Peanut Butter Tasty Cake

4 eggs
1 tsp vanilla
2 cups sugar
2 cups flour
1 cup milk
2 tsp melted butter
2 tsp baking powder
1 cup peanut butter
1 ( 8 oz) Hershey bar

Mix all ingredients together, except the Hershey bar. Pour into a greased and floured cookie sheet. Bake at 350 for 15-18 minutes. While cake is hot, spread peanut butter over cake. Refrigerate until cool. Melt candy bar and spread over cake.