Beat eggs until thick. Gradually add sugar, then milk and vanilla. Blend in dry ingredients. Pour into 2 (13"x9") greased and floured pans. Bake at 350 degrees for 15 to 20 minutes.
When baked, remove from oven and put on peanut butter (1/2 cup on each pan). Let sit a few minutes then spread over entire top. Let sit for a few minutes again. Melt chocolate and spread on top of peanut butter. Let stand for 2 hours before cutting.