Add tuna. Pour mixture into a baking dish sprayed with cooking spray. Add cheese on top. Sprinkle fried onions on top and bake for 10 minutes or just until the onions are golden brown.
Prepare noodles according to package directions; drain. In a large bowl, combine soup and milk; mix well. Add noodles, tuna, Swiss cheese, peas, butter, salt, and pepper. Pour mixture into prepared ...