The Easiest, Creamiest Potato Au Gratin Recipe Ever!
This potato au gratin recipe is incredibly easy, super tender, uber-creamy, and loaded with delicious savory cheesy flavors. Serve it hot alongside your favorite dish - but I won't judge if you decide to have it on its own!
Ingredients
- 1 1/2 pounds red potatoes
- 4 tbsp butter
- 3 tbsp all-purpose flour
- 1 cup whole milk
- 1/2 tsp fine salt
- 1/3 tsp freshly ground black pepper
- 1/3 tsp dried thyme
- 1/3 tsp nutmeg powder
- 1 1/2 cups cheddar cheese, grated
- 1 cup Gruyère cheese, grated
- 1 onion, chopped
Instructions
Prepare The Elements
- To start, preheat the oven to 380⁰F (195⁰C).
- Meanwhile, cut the peeled potatoes into very thin slices. Each slice can be roughly 1-2 mm thick.
- Next, melt the butter in a saucepan and combine it with the all-purpose flour using a whisk.
- Now, slowly pour a little bit of milk into the butter-flour mixture (roux). Whisk well after every addition so you get a uniform mixture. If you add the milk too quickly, the sauce will because lumpy and nearly impossible to fix.
- Once all of the milk has been added and you have a uniform mixture, season it with salt, pepper, thyme, and nutmeg. Whisk it well to incorporate the flavors.
- Next, add 1/2 cup grated cheddar cheese and 1 cup grated Gruyère. Use a spatula to stir in the cheese until it's completely melted.
Assemble The Potatoes Au Gratin
- Brush a baking dish with melted butter or spray it with cooking spray. Do not use oil or the dish will become oily.
- Place a third of the potato slices in the prepared baking dish.
- Add half of the chopped onions over the potatoes. Add a little bit of salt for some seasoning.
- Next, add a third of the cheese sauce over the potato and onion mixture. Make sure it's spreadly evenly.
- Then, add another layer of potatoes, onions, and sauce, then repeat the process a final time. Overall, you should have three layers of potatoes, onions, and sauce.
Bake Your Gratin Potatoes
- Cover your assembled dish with a sheet of foil. Place it inside the oven and bake it for 50 minutes.
- Remove the foil, sprinkle the remaining grated cheese over the baked dish, and place it back into the oven, uncovered. Let it bake for another 30 minutes so the cheese can become melty and golden brown.
- Once baked, remove your delicious savory potato gratin from the oven. Allow it to rest for 5-10 minutes.
- Finally, cut it into portions and serve it while it's still hot.
Nutrition
Calories: 315kcalCarbohydrates: 25gProtein: 16gFat: 17gSaturated Fat: 11gPolyunsaturated Fat: 1gMonounsaturated Fat: 5gTrans Fat: 0.3gCholesterol: 48mgSodium: 584mgPotassium: 648mgFiber: 2gSugar: 5gVitamin A: 521IUVitamin C: 11mgCalcium: 332mgIron: 1mg
Tried this recipe?Let me know how it was!