Double-Mushroom Tuna Casserole

Prepare noodles according to package directions. Drain and set aside.

Meanwhile, spray a large non-stick skillet with cooking spray. Add mushrooms and onions and sauté until mushrooms are golden brown, about 10 minutes. Transfer to a large bowl. Stir in drained noodles, cream of mushroom soup, tuna, peas, milk and half the shredded cheese. Pour into a lightly greased 13-by-9-inch baking dish. Smooth top and sprinkle with remaining shredded cheese and crushed potato chips. 

Bake 15 to 20 minutes or until edges are bubbly. Let stand 5 minutes before serving.