1 box macaroni and cheese dinner
1 (7 oz.) can tuna, drained and flaked
1 can condensed cream of mushroom soup
1/2 c. milk
1 tbsp. instant onion
1 tsp. lemon juice
1/8 tsp. garlic salt
1/2 c. crushed potato chips or crackers

Prepare dinner according to package directions. Add tuna, soup, milk and seasonings. Pour into a 1 1/2-quart casserole. Top with crushed potato chips or crushed crackers.

Bake at 350°F for 20 minutes.