Preheat oven to 350 degrees F (175 degrees C). Bring a large pot of lightly salted water to a boil.
Add pasta and cook for 8 to 10 minutes or until al dente; drain.
In a 1 1/2 quart glass casserole dish, layer noodles, butter cubes, 2 slices of cheese, 1/2 of the tuna, and 1/2 of the soup. Repeat the layering with the remaining ingredients. Top the casserole with bread crumbs.
Bake at 350 degrees F (175 degrees C) for 10 to 15 minutes.
