Au Gratin Potatoes Recipe
"Transform humble potatoes into a decadent delight with our Au Gratin Potatoes recipe! Layers of thinly sliced potatoes bathed in a creamy, cheesy sauce, baked to golden perfection. A comfort food classic that's creamy, cheesy, and oh-so-satisfying. Perfect for any occasion, from weeknight dinners to holiday feasts!"
Equipment
- 1 Mandoline Slicer
- 1 Whisk
- 1 Baking Dish
- 1 Saucepan
- 1 Spatula
- 1 Oven
Ingredients
- Butter to grease the baking dish.
- 2½ pounds Russet potatoes 3 to 4 peeled and sliced very thin.
- 1½ teaspoons salt
- ¼ teaspoon freshly ground black pepper
- 1 cup 4 oz finely grated Parmigiano-Reggiano
- 2¼ cups heavy cream
- Fresh thyme for serving (optional)
Instructions
- Set the oven's temperature to 350°F. In a large saucepan over medium-high heat, heat the butter. Add the onions and cook for 5 to 6 minutes, or until they are tender and translucent. After adding the garlic, heat it for one more minute.
- Mix in the flour until well combined. Simmer for one or two minutes. Add the cream and milk, stirring constantly to avoid clumps. Bring it gradually to a boil, then lower the heat and simmer it until it thickens a little.
- When the salt, cheddar, and parmesan cheeses are added, stir until they melt.
- When the potatoes are added, mix them in completely. Transfer the blend into a 2-quart baking dish.
- Add the remaining Parmesan cheese over top. Put foil over it. Depending on how thickly the potatoes are sliced, bake the potatoes for one hour or until they are cooked.
- After 20 minutes, or until the top is lightly browned, remove the cover and continue baking.
- Give it a good five minutes to settle before serving. If desired, add some chopped parsley as a garnish.
Notes
- Proceed as directed through the beginning of step 5 if you would want to prepare these in advance.
- Once baked for thirty minutes, take it out and allow it to cool on the counter to room temperature.
- After that, cover and chill for the night.
- When you are ready to serve the next day, keep baking for a further 25 to 30 minutes, making sure they are thoroughly warmed through.