1 tablespoon vegetable oil
1 (16 oz) package elbow macaroni
9 tablespoons butter
1/2 cup shredded Muenster cheese
1/2 cup shredded mild cheddar cheese
1/2 cup shredded sharp cheddar cheese
1/2 cup shredded Monterey Jack cheese
1 1/2 cups half and half
8 oz cubed processed cheese food
2 eggs, beaten
1/4 tsp salt
1/8 tsp pepper
Bring a large pot of lightly salted water to a boil. Add pasta and cook for 8 - 10 minutes or until al dente; drain well and return to cooking pot. In a small saucepan over medium heat, melt 8 tablespoons butter; stir into the macaroni. In a large bowl, combine the Muenster cheese, mild and sharp Cheddar cheeses, and Monterey Jack cheese; mix well. Preheat oven 350 degrees.
Add the half and half, 1 1/2 cups of cheese mixture, cubed processed cheese food, and eggs to macaroni; mix together and season with salt and pepper. Transfer to a lightly greased deep 2 1/2 quart casserole dish. Sprinkle with the remaining 1/2 cup of cheese mixture and 1 tablespoon of butter.
Bake in preheated oven for 35 minutes or until hot and bubbling around the edges; serve.