Potatoes Au Gratin

4.72 from 7 votes

Warm, savory, and made with cheesy flavors of asiago and parmesan cheeses, this homemade potato au gratin recipe is a winner for whenever you are looking for the perfect addition to your main course or protein. Family-friendly, easy, and full of comfort, this potato dish is made with both sweet and golden potatoes.

Prep Time10

Cook Time1 30

Additional Time10

Total Time1 50

Course: Potatoes

Cuisine: American

Keyword: + recipes, best, cheesy holiday side dish, from scratch, homemade, potatoes au gratin, sweet potatoes au gratin, with bacon easy, with gold potatoes, with sweet potatoes

Servings:

Calories: 355kcal

Author: Michaela Kenkel

Equipment

Ingredients

1 cup onion chopped
2 cloves garlic minced
6 Tablespoons butter
6 Tablespoons flour
1 teaspoon salt
½ teaspoon pepper
3½ cups milk
4 cups sweet potatoes peeled and sliced thin
4 cups Yukon gold potatoes skins left on, sliced thin
8 ounces Asiago cheese shredded
½ cup parmesan cheese grated
6 slices bacon cooked crisp and crumbled

Instructions

Preheat oven to 350 degrees F. Prepare a 3 quart casserole dish with non-stick cooking spray.
In a large saucepan, cook onion and garlic in hot butter until tender. Whisk in salt and pepper and flour. Add in milk, continuing to whisk until sauce is thickened, hot and bubbly. Remove from heat.
Spread one-third of the sauce into the bottom of the prepared casserole dish. Top with half of both the gold and the sweet potatoes, then half of the Asiago cheese.
Top with another third of the sauce, then the remaining potatoes, and the remaining Asiago cheese. Spoon the remainder of the sauce over the top. Sprinkle with the parmesan cheese.
Cover and bake for 45 minutes.
Uncover and bake for another 45 minutes, or until potatoes are tender. Sprinkle bacon over the top, and let potatoes stand, uncovered for 10 minutes before serving.

Nutrition