To peel tomatoes, use large pot, fill with water and bring to boil. Place tomatoes in boiling water for 1 minute and then place in large bowl of ice water for 1 minute. Remove and let cool. Skins should peel right off!
Mix Bisquick with approximately 1/3 cup water and butter in bowl. You may need to add more water as needed to form dough.
Press into bottom and sides of greased 13" X 9" baking dish.
Place layer of tomatoes on Bisquick crust first and then layer of cheese over that. Continue until all tomatoes are used.
Mix mayonnaise, onion, parsley, and basil in small bowl. Spread over top of layers. Bake at 350 degrees for 30 minutes or until crus is light golden br.