These Cheesy Scalloped Potatoes Bake are creamy, cheesy, and oh-so-comforting! Layers of tender potatoes are baked with a rich cheese sauce to create a warm and delicious dish.
Who can resist all that cheesy goodness? I love serving this at family gatherings, and I always hear everyone asking for seconds! It’s the perfect cozy side for any meal.
Key Ingredients & Substitutions
Potatoes: Russet potatoes are the best choice here due to their starchy texture, which helps achieve that creamy consistency. However, you can substitute with Yukon Gold potatoes for a slightly buttery flavor. Just make sure they’re sliced thin for even cooking!
Cheddar Cheese: Sharp cheddar is a must for its bold flavor. I often mix in some aged cheddar for an extra kick. If you’re looking for a milder option, try using mild cheddar or a blend of cheddar and Monterey Jack.
Gruyère Cheese: This cheese adds a nice depth, but if it’s not available, fontina or even a good quality mozzarella can work in a pinch. Just remember that it won’t have the same nutty taste, but it’ll still be delicious.
Heavy Cream: If you’re looking to lighten the dish, you can use half-and-half or a mix of whole milk and Greek yogurt for creaminess without as much fat. But I love the richness heavy cream brings to the sauce!
Thyme: Fresh thyme is preferred for its vibrant flavor, but if you only have dried thyme, that’s okay too. Just use a little less, as dried herbs are more concentrated. Fresh herbs really elevate the dish!
How Do You Make Sure Your Cheese Sauce is Smooth?
The key to a smooth cheese sauce is in the roux and whisking technique. Here’s how to do it right:
- Start with melted butter, add garlic, and then whisk in flour to form a roux. Cook it for 2 minutes to eliminate the raw flour taste.
- Gradually pour in the milk and cream while whisking constantly to avoid lumps. I always use a whisk for this part – it really helps keep things smooth!
- Keep cooking until the sauce thickens and coats the back of a spoon (about 5–7 minutes). If lumps do form, don’t worry; just keep whisking and it should smooth out.
- Finally, once you remove it from heat, stir in cheese until melted. If your cheese isn’t melting smoothly, try using shredded cheese instead of blocks!

How to Make Cheesy Scalloped Potatoes Bake
Ingredients You’ll Need:
For the Potatoes:
- 4 large russet potatoes (about 2 pounds), peeled and thinly sliced
For the Cheese Sauce:
- 2 cups sharp cheddar cheese, shredded
- 1 cup Gruyère cheese, shredded (optional for extra flavor)
- 3 cups whole milk
- 1 cup heavy cream
- 4 tablespoons unsalted butter
- 3 tablespoons all-purpose flour
- 2 cloves garlic, minced
- 1 teaspoon salt (adjust to taste)
- 1/2 teaspoon black pepper
- 1/2 teaspoon dried thyme or fresh thyme leaves
- 1/4 teaspoon ground nutmeg (optional)
For Garnishing:
- 2 tablespoons fresh parsley, finely chopped
How Much Time Will You Need?
This creamy, cheesy scalloped potato bake will take about 20 minutes to prepare and about 1 hour and 15 minutes to cook. You’ll spend a bit of time slicing the potatoes and making the cheese sauce, then just let it bake to golden perfection!
Step-by-Step Instructions:
1. Prepare the Oven and Baking Dish:
First things first, preheat your oven to 375°F (190°C). Next, grab your 9×13 inch baking dish and grease it well with butter or non-stick spray to keep your potatoes from sticking.
2. Slice the Potatoes:
Peel and thinly slice your russet potatoes to about 1/8 inch thick. If you have a mandoline slicer, it’ll make this part super easy and quick!
3. Make the Cheese Sauce:
In a medium saucepan, melt the butter over medium heat. Once the butter is melted, add in the minced garlic and let it cook for about 1 minute until you can smell that delicious garlic aroma.
4. Cook the Roux:
Next, whisk in the flour, stirring constantly. Cook this mixture for about 2 minutes to form a roux, which will help thicken your cheese sauce later.
5. Add Liquids and Thicken:
Gradually whisk in the whole milk and heavy cream. Keep whisking to avoid any lumps. Cook this mixture for about 5–7 minutes, or until it thickens enough to coat the back of a spoon. It should be nice and creamy!
6. Stir in Cheese and Seasoning:
Take the sauce off the heat and stir in the salt, pepper, thyme, nutmeg (if using), and 1 1/2 cups of the shredded cheese. Mix until everything is melted and smooth—this is where the magic happens!
7. Layer the Potatoes and Sauce:
Now it’s time to get layering! Start by arranging a layer of potato slices at the bottom of your prepared baking dish. Pour a portion of the cheese sauce over the potatoes, and then repeat this process with more layers of potatoes and sauce until you run out, finishing with a sauce layer on top.
8. Add More Cheese:
Sprinkle the remaining 1/2 cup of cheddar cheese and the 1 cup of Gruyère cheese evenly over the top for an extra cheesy goodness!
9. Bake:
Cover your baking dish with foil and pop it in the preheated oven. Bake for 45 minutes, then remove the foil and let it bake for an additional 25-30 minutes. You’re looking for a golden brown top and tender potatoes when you poke them with a fork.
10. Rest and Garnish:
Once it’s done, give your dish about 10-15 minutes to rest. This will help everything set nicely. When you’re ready to serve, sprinkle on the freshly chopped parsley for a bright and tasty touch.
Enjoy your creamy, cheesy scalloped potatoes bake—your taste buds will thank you!
Can I Use Other Types of Cheese in This Recipe?
Absolutely! While sharp cheddar and Gruyère are delicious, you can mix it up with mozzarella, fontina, or even gouda for different flavors. Just ensure they melt well to keep that creamy texture!
Can I Prepare This Dish Ahead of Time?
Yes! You can assemble the scalloped potatoes and cheese sauce in advance. Cover and refrigerate them for up to 24 hours before baking. Just remember to let it sit at room temperature for 30 minutes before popping it in the oven to ensure even cooking.
How to Store Leftovers?
Store any leftovers in an airtight container in the fridge for up to 3 days. To reheat, warm them gently in the oven at 350°F (175°C) covered with foil, or microwave them in smaller servings until heated through.
What Should I Serve with Cheesy Scalloped Potatoes?
This dish pairs wonderfully with a green salad, roasted vegetables, or grilled meats. It’s a great side for holiday meals or potlucks—definitely a crowd-pleaser!
