Recipe(tried): Creamettes Tuna Casserole (using macaroni and cheese dinner mix)

This is my first time to see this board. This is the tuna casserole I use the most. I cut it off the Creamettes box many years ago. So, here's your answer almost two years later:

CREAMETTES TUNA CASSEROLE

1 pkg Creamettes Mac and Cheese Dinner
1 (7 oz) can tuna, drained and flaked
1 (10 3/4 oz) can condensed cream of mushroom soup
1/2 cup milk (could be 1/3, as I struck it out)
1 tablespoon instant onion
1 teaspoon lemon juice
1/8 teaspoon garlic salt
1/2 cup crushed potato chips

Prepare Mac and Cheese dinner according to directions.

Add tuna, soup, milk and seasonings. Pour into 1 1/2 quart casserole. Top with potato chips.

Bake in a 350 degree F oven for 20 minutes.