Cheesy Pierogie Casserole

Combine water, butter, salt, milk, onion, and potato flakes in a microwave-safe bowl. Cover and microwave 4-5 minutes.

Cook noodles according to package directions, then drain.

Layer half of the noodles on the bottom of a glass baking dish. Put on 6 slices of american cheese.

Then spread on top half of the mashed potatoes. Sprinkle with all of the cheddar cheese.

Layer on the remaining potatoes.

Top with the remaining noodles. Cover the dish with foil.

Cook 20 minutes at 350 degrees, while covered.

Then uncover and place 6 slices of american cheese on top. Bake an additional ten minutes uncovered. ?