1 pkg. macaroni cheese dinner
1 (7 oz.) can tuna (drained and flaked)
1 can 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

Prepare dinner according to package directions. Add tuna, soup, milk and seasonings. Pour into a 1 1/2 quart casserole dish. Top with potato chips. Bake at 350 degrees for 20 minutes.