Easy, quick, cheap, and my family loved it.
1 8oz pkg spaghetti
1 can cream of chicken soup
1/2 cup milk
2 cups diced cooked chicken
1 4oz can of sliced mushrooms (I super chopped them up)
1/4 cup grated Parmesan cheese
Cook spaghetti. Drain and place in a buttered 2 quart casserole pan. Mix soup and milk. Add diced chicken and drained mushrooms. Combine chicken mixture with spaghetti. Sprinkle cheese on top. Bake at 350 in oven for 30 minutes.