Name: Au Gratin Potatoes with Gruyere Cheese
Prep time: 20 min
Cook time: 1 h 5 min
Total time: 1 h 25 min
Yield: 6 Servings
Cuisine: American
Ingredients: 3 cups Yellow or White Potatoes; 0.5 Onion; 4 tablespoons All Purpose Flour; 1 tsp Salt and Pepper; 2 cups Whole Milk; 3 tablespoons Butter; 1 cup Gruyere cheese; 1 tbsp Parsley

Au Gratin Potatoes with Gruyere Cheese make the perfect side to impress your dinner guests. These potatoes are baked until tender and coated in a creamy golden brown cheese topping. Potatoes au gratin with gruyère are a great recipe to make for a gathering or an average family dinner. This recipe looks delicious, with creamy potatoes and grated gruyere cheese on top.

Dinner

1 h 25 m

American

It is a Keeper

March 17, 2026

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Au Gratin Potatoes with Gruyere Cheese

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Ingredients

Warning0 allergens identified

Instructions

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Instructions

Preheat the oven to 375 degrees.

Peel the potatoes, then use a mandolin, or sharp knife for a thin slice about to ¼ inches thick.

Finely chop the onions.

Spray the bottoms and sides of an 8 x 8 baking dish with non-stick cooking spray.

Alternate layers of potatoes, onions, flour, salt and pepper, starting with potatoes first and ending with flour mixture on top. You should have 3 layers.

Top with cubed butter.

Heat the milk until just before boiling.

Pour the milk over the layers in the baking dish.

Top with gruyere.

Bake covered until the potatoes are fork tender (approx 50 minutes).

Uncover and bake until the cheese bubbles and browns. (approx 15 minutes).

Broil for 2 minutes to get a nice golden brown top.

Remove the dish from the oven, and let it stand for 15 – 20 minutes or until the sauce thickens.

Nutrition

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Tips & Tricks (5)

Slice Potatoes Uniformly 🔪
Use a mandoline slicer to cut potatoes into consistent 1/8-inch slices, ensuring even cooking and a professional appearance throughout the dish.
Make a Proper Béchamel Base 🧈
Create a silky sauce by making a roux (equal parts butter and flour) first, then slowly whisk in warm milk to prevent lumps and achieve a creamy, velvety texture.
Layer Strategically for Flavor 🧅
Thinly slice onions and distribute them evenly throughout the potato layers rather than just at the bottom to ensure every bite has subtle aromatic depth.
Grate Gruyère Just Before Assembly 🧀
Always grate your Gruyère cheese fresh from the block immediately before baking, as pre-shredded cheese contains anti-caking agents that prevent proper melting and browning.
Finish Under the Broiler 🔥
After baking, place the dish under a preheated broiler for 2-3 minutes to create a deeply golden, crispy cheese crust while keeping the interior creamy.