This is how Im making potatoes au gratin from now on.

Unfortunately, my child is not in this camp, and I was worried she wouldnottry these.

Not only did she try them, she immediately exclaimed, These are really good!

Overhead view of a 9x13 sheet pan of Sheet Pan Au Gratin Potatoes recipe on a countertop with forks, a serving spoon, glasses and a small bowl of chives

Simply Recipes / Mark Beahm

Sheet pan potatoes au gratin are faster than most recipes thanks to their thinness.

This also means more bubbly cheese covering every bite.

The sheet pan method means less layers and more surface area.

Overhead view of the corner of a sheet pan of Sheet Pan Au Gratin Potatoes recipe with a spoon scooping a serving out of the pan

Simply Recipes / Mark Beahm

It cooks faster and you get more crispy surfaces on the bottom and edges of the casserole.

What’s the difference between potatoes au gratin and scalloped potatoes?

Potatoes au gratin uses thinner slices of potatoes tucked within a rich and cheesy sauce.

Closeup view of a spoon with a serving of Sheet Pan Au Gratin Potatoes recipe

Simply Recipes / Mark Beahm

The sauce in scalloped potatoes typically does not include cheese.

Add the garlic cloves, shallot, thyme sprigs, salt, and pepper.

Meanwhile, use a mandolin to slice the potatoes into thin slices, no thicker than 1/8 inch.

Overhead view of a small pot of the cream with sprigs of thyme, shallot halves and garlic cloves for Sheet Pan Au Gratin Potatoes recipe

Simply Recipes / Mark Beahm

Add the sliced potatoes to a large bowl of cold water to rinse off some starch.

Liberally butter a large rimmed 11x14 half-sheet pan with butter.

Get all the sides, corners, and the bottom.

Overhead view of a clear glass bowl of potato slices in cold water for Sheet Pan Au Gratin Potatoes recipe

Simply Recipes / Mark Beahm

Remove the potato slices from the water and dry on a few clean kitchen towels or paper towels.

Combine the gouda and Parmesan cheeses in a small bowl.

Set aside about 1/3 of the cheese for sprinkling at the end.

Overhead view of a 9x13 sheet pan with slices of potato shingled across the sheet for Sheet Pan Au Gratin Potatoes recipe

Simply Recipes / Mark Beahm

Sprinkle the layer of potatoes with half of the remaining cheese.

Repeat, making another layer, with the potatoes and cheese going in the opposite direction.

Remove the garlic, shallot, and thyme from the cream.

Overhead view of a 9x13 sheet pan of cooked potato and cheese mixture before garnishing with chives for Sheet Pan Au Gratin Potatoes recipe

Simply Recipes / Mark Beahm

Pour the infused cream over the potatoes, being careful to evenly distribute it all over.

Cover the pan with foil and bake for 30 minutes.

Let the potatoes cool for 5 to 10 minutes before slicing into servings.

Garnish with chives and serve while warm.

Leftover potatoes will keep in an airtight container in the fridge for up to 5 days.

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