Cook pasta according to package directions in boiling salted water (but for a few minutes less time until almost tender).

Butter a casserole dish and place a layer of pasta, a layer of meat, cheese, and soup, ending with a layer of cheese.

Bake in a 350°F oven until cheese and soup melt through and mixture is bubbly. Stir once or twice, then serve hot.

Makes 3 or 4 servings.

Variation: Omit taco seasoning and use Italian seasoning instead (oregano, basil, etc) and use 1 can tomato instead of mushroom.