You can also substitute shrimp or crab for a whole new flavor.
1/2 c. mayonnaise
1/2 c. milk
10-3/4 oz. can cream of mushroom soup
1 c. shredded Cheddar cheese
1/2 t. dill weed
6-oz. pkg. rotini pasta, cooked
6-oz. can tuna, drained
1 c. potato chips, crushed
Combine mayonnaise and milk; stir in soup, cheese and dill. Gently stir in cooked pasta and tuna. Pour into an ungreased 1-1/2 quart casserole dish. Cover and bake at 350 degrees for 30 minutes. Uncover and sprinkle with potato chips; bake an additional 5 minutes. Serves 6.
Just for fun, try a new flavor of pasta in a favorite casserole recipe...sun-dried tomato-basil, lemon pepper, roasted garlic & parsley or jalapeño. So many flavorful choices!