If you’ve ever tried making au gratin potatoes and ended up with a watery mess or undercooked slices, I get it. I’ve been there. I know the struggle of dishes that don’t come out the way they should, so I made sure this one delivers and I did all of the testing and tweaking so you don't have to. My recipe has tender layers of sweet potatoes baked in a rich, cheesy sauce that always comes out creamy and never bland. I'm known for my seasoning skills!
Course dinner, lunch, Side Dish
Cuisine American
Keyword Scalloped sweet potatoes, sweet potatoes au gratin
Heat a saucepan on medium heat and add the butter.
When melted, add the garlic and cook for a couple of minutes until fragrant.
Add in the cream cheese, whipping cream, Parmesan reggiano, and ½ cup shredded cheddar cheese. Stir. Add in the onion powder, salt, and pepper to taste. Taste the sauce repeatedly and adjust the flavor to taste as needed.
Stir continuously until the cheese has melted.
Remove from the heat and set aside.
Arrange the sliced sweet potatoes in rows throughout a 9×13 baking dish. Drizzle the cheese sauce throughout.
Sprinkle the remaining ½ cup of shredded cheddar and the mozzarella throughout the pan.
Cover with foil and bake for 30 minutes.
Remove the foil and bake an additional 25 minutes until the sweet potatoes are tender.
If you like a crisp top, a couple of minutes before the dish has finished baking, turn on the Broil function on the oven. Broil for 1-3 minutes until the top has crisped
Cool for 30 minutes before serving.
Video
Notes
You can reduce the amount of fat in the recipe by using low-fat cream cheese and cheese in the recipe. You can also lessen the amount of cheese used.