Ive just found the best side dish fromFifteen Spatulason Youtube.

Whether its steak, beef, or chicken, this potato casserole will not disappoint.

Whats more, its a one-bowl recipe, super quick and easy to make, and it tastes fantastic!

Cheesy Potato Gratin Casserole Recipe

Image credits: Fifteen Spatulas via Youtube

Learn how to make this by watching the video below.

Thinly slice the potatoes and place them into the milk mixture.

Next, grate your cheeses, then add them to the sliced potatoes.

Combining all the ingredients for potato gratin casserole

Mix all together to incorporate the ingredients.

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Step 2

Dump the potatoes into your baking dish and arrange them evenly.

Place the baking dish on a sheet pan and cover it tightly with aluminum foil.

Dumping the potato mixture to the baking dish

Place it in the oven at 400 degrees F and bake for one hour.

Cheesy Potato Gratin Casserole Recipe