2 cups uncooked macaroni noodles
1 teaspoon onion powder
1/2 teaspoon dry mustard powder
1 can cream of chicken soup
1/2 cup sour cream , regular or light
1/2 cup mayonnaise
1/2 teaspoon pepper
3 cups cheddar cheese
1 cup gruyere cheese (or you can use 4 cups cheddar cheese)