Combine first 2 ingredients in a medium saucepan; simmer 30 minutes. In a 2 1/2- quart greased casserole dish, layer half of the noodles, half of the tuna, half of the prepared soup and 4 slices of cheese. Repeat the layering with remaining ingredients. Top the casserole with breadcrumbs; drizzle with melted butter. Bake at 350 degrees for 30-35 minutes. Makes 6-8 servings.