How To Make Creamy Au Gratin Potatoes

These homemade au gratin potatoes are an easy, cheesy side dish that is impossible to resist.

Thinly sliced potatoes are cooked to melt-in-your-mouth perfection in a rich cheddar cheese cream sauce.


– Potatoes – Onion – Butter – Flour – Half and Half

Wash, peel, and slice potatoes thinly (about ¼") using a mandoline slicer or a sharp knife, then layer them evenly inside the prepared casserole dish.


Sprinkle the onions evenly over the potatoes.


In a medium saucepan over medium heat, add the butter and melt. Whisk in the flour, salt, pepper and garlic powder and stir constantly for one minute.


Slowly add in the half and half and continue to cook and stir over medium heat until the mixture has thickened.


Once thickened, add the cheese and stir until melted. Remove from heat and pour the cheese mixture over the potatoes and onions.


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