2 c. uncooked macaroni
2 cans cream of mushroom soup
1/2 c. milk
1/2 c. sour cream
1/2 c. minced onion
1 c. diced Cheddar cheese
1 can peas (drained)
1 (4 oz.) can mushroom pieces and stems
2 (7 oz.) cans tuna (drained)
1 (2 oz.) jar pimentos (drained)

Prepare macaroni according to directions. Drain. Combine all ingredients. Pour into 3 quart casserole. Bake 350 degrees for 30 minutes.