Beat the eggs and sugar, add flour and vanilla. Scald the milk with 2 tablespoons of butter and add to the mixture. Mix well. Pour into a large greased cookie sheet. Bake at 350 degrees for 20 minutes.
When it comes out of the oven, spread with peanut butter. Put into refrigerator until firm for about 1/2 hour. Melt chocolate chips in microwave and spread over peanut butter. Put back into refrigerator until chips are firm but not hard. Cut into squares.