Heat oven to 350°F. Cook and drain pasta as directed on package, using minimum cook time. In ungreased 1 1/2-quart casserole, stir together soup, milk, tuna, mushrooms and cooked pasta.
Cover; bake 20 minutes. Remove casserole from oven. Cut up large pieces of broccoli; gently stir broccoli into tuna mixture. In small bowl, mix butter, bread crumbs and almonds; sprinkle over casserole. Bake about 30 minutes longer or until bubbly around edges.