Thinly sliced potatoes are paired with a creamy cheesy ranch sauce in the perfect Cheddar Ranch Au Gratin Potatoes recipe!
Cheesy Potato Casserole
What is more satisfying than a rich Cheesy Potato Casserole? Nothing! These Au Gratin Potatoes are the perfect side dish or recipe to carry to a potluck. I promise there will be no leftovers! What sets this easy potato recipe apart from others is the addition of Ranch seasoning. It’s no secret that potatoes, cheese and ranch are an unstoppable combo. It is especially amazing in this casserole!
You can make this a complete recipe by adding ham, this happens to be a great way to use up leftover Sunday ham! Or chopped bacon and green onions makes this dish extra special!
Ingredients in Au Gratin Potatoes
As always, this is a quick overview of the ingredients you will need for this recipe. To get the complete recipe just keep scrolling. Potatoes au gratin require fewer ingredients than you’d think! Here’s all you’ll need to make this cheesy potato recipe:
- Potatoes: Yukon Gold, Idaho or Russet potatoes, the key is to very thinly slice them. I use a madoline slicer to make them perfectly uniform.
- Butter: salted or unsalted
- Shallot and Garlic: finely chopped
- Milk and Heavy cream: using both gives the best creamy texture.
- Shredded Cheddar Cheese
- Ranch seasoning
How to Make Au Gratin Potatoes
This is a really easy homemade au gratin potatoes recipe. Here are the basic steps to making it:
- First, make your cheesy sauce in a deep skillet or sauce pan. Melt the butter, then sauté shallot and garlic until fragrant. Stir in milk, heavy cream, shredded cheddar, and Ranch seasoning. Bring the mixture to a simmer (stirring occasionally) until it has thickened into a beautiful, smooth sauce.
- In a greased baking dish, evenly layer the thinly sliced potatoes and top with the cheddar sauce. Cover with foil and bake 25 minutes.
- Remove the foil, add the shredded cheddar cheese and bake an additional 10-15 minutes until the cheese is golden and the potatoes are fork tender.
- Important! Allow the dish to rest at least 10 minutes so that the sauce can thicken.
What Are the Best Potatoes for Au Gratin Potatoes?
Russet, Idaho and Yukon Gold potatoes are excellent options for Au Gratin or Scalloped Potatoes. The key to a successful dish
Can I Prep This Dish in Advance?
Yes! You can assemble the cheesy ranch potatoes in advance, wrap it in plastic wrap, and then chill up to 24 hours before baking. Note that the potatoes may oxidize in the fridge, but once baked they should look fine.
Tips for the Best Au Gratin Potatoes
- Very thinly sliced potatoes! This is the absolute most important
- This recipe can easily be doubled and baked in a 9×13-inch casserole dish.
- Note that the cooking time may vary slightly based on the thickness of your potatoes. To check the potatoes, stick with a fork or knife to test for tenderness.
More Potato Side Dishes:
- Mom’s Mashed Potatoes
- One-Pan Chipotle Fingerling Potatoes
- Rosemary Garlic Sweet Potato Wedges
- Crock Pot Cheesy Potatoes
- Cheesy Scalloped Potatoes
- Spicy Ranch Potatoes
- 2 pounds potatoes, peeled and very thinly sliced
For the Cheese Sauce
- 1 tablespoon butter
- 1 shallot
- 1 tablespoon garlic, minced
- 1 1/2 cups whole milk
- 1/2 cup heavy cream
- 1 cup sharp cheddar cheese, shredded
- 1/4 cup parmesan cheese
- 1 (1 ounce) Ranch seasoning packet
- 1 cup sharp cheddar cheese, shredded
- Preheat oven to 400 degrees F. Spray an 11 x 7-inch baking dish with cooking spray and set aside.
- In a deep skillet or sauce pan combine the butter over medium heat, add the shallot and garlic and sauté until fragarant. Stir in the milk, heavy cream, cheeses, and Ranch seasoning.
- Bring the mixture to a simmer, stirring occasionally. When the mixture has thickened remove from the heat and set aside.
- Layer the thinly sliced potatoes in a greased casserole dish. Pour the cheddar sauce over the potatoes and tilt back and forth so it is evenly distributed. Cover the dish with foil and bake 25 minutes.
- Remove the foil and add the remaining cheese. Bake an additional 10-15 minutes until the potatoes are fork tender and the cheese is golden.
- Allow the dish to rest at least 10 minutes before serving.
Cooking time may vary slightly based on the thickness of your potatoes. To check potatoes, stick a fork or knife for tenderness.
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Nutrition Information:Yield: 8 Serving Size: Heaping 1/2 cup
Amount Per Serving: Calories: 372Total Fat: 21gSaturated Fat: 10gCholesterol: 72mgSodium: 727mgCarbohydrates: 30gFiber: 3gSugar: 5gProtein: 14g