Cheesy Garlic Scalloped Potatoes
Prep Time: 20 minutes | Cook Time: 1 hour 30 minutes | Total Time: 1 hour 50 minutes | Servings: 8 to 10 | Calories: ~380 per serving
There’s a moment about 10 minutes into the bake when it starts.
That warm, deeply savory smell of garlic butter sauce and melting cheese wafting through the whole house. The kind of smell that pulls people out of whatever room they’re in and plants them in the kitchen asking how much longer.
That smell is this recipe.
Cheesy garlic scalloped potatoes, layers of thinly sliced Yukon Gold potatoes in a homemade garlic cream sauce with two types of cheese, baked until the top is deeply golden, the edges are slightly crispy, and the center is the kind of creamy, yielding, soft that you can only achieve from a proper baked potato dish.
It’s the side dish that makes the main course irrelevant.
Serve it with ham, roasted chicken, steak, or just let it be the whole dinner. Nobody will object.
What You’ll Need
For the Potatoes
- 3 lbs Yukon Gold potatoes (or Russet as an alternative), washed and thinly sliced (about 1/8-inch thick)
- 1 medium yellow onion, thinly sliced
For the Garlic Cream Sauce
- 4 tablespoons unsalted butter
- 4 cloves fresh garlic, minced
- 1/4 cup all-purpose flour
- 2 cups whole milk (2% works too)
- 1 cup low-sodium chicken broth
- 1 tablespoon fresh thyme, minced (or 1 teaspoon dried thyme)
- 1 teaspoon dry mustard
- 1/2 teaspoon smoked paprika
- 1.5 teaspoons kosher salt (plus more to taste)
- 1/2 teaspoon freshly ground black pepper
For the Cheese
- 2 cups sharp cheddar cheese, freshly shredded and divided
- 1/2 cup Parmesan cheese, freshly grated
For Topping and Garnish
- Additional 1/2 cup sharp cheddar for the top layer
- Fresh parsley, chopped, for garnish
Tools You’ll Need
- 9×13-inch baking dish (or 3-quart casserole dish)
- Mandoline slicer (strongly recommended) or very sharp chef’s knife
- Medium saucepan (for the sauce)
- Whisk
- Wooden spoon or silicone spatula
- Measuring cups and spoons
- Aluminum foil
- Box grater
Pro Tips
Freshly grate your cheese. Pre-shredded cheese from a bag contains cellulose and anti-caking agents that prevent smooth melting. It creates a grainy texture in the sauce rather than the silky, creamy result you’re after. Take the extra three minutes to grate from a block.
Use a mandoline for even slices. Consistent 1/8-inch slices mean the potatoes all cook through at the same rate. Uneven hand-cut slices mean some will be perfectly soft while others are still firm. A mandoline is the most useful kitchen investment for any baked potato dish.
Don’t skip the roux. The butter-flour base is what thickens the cream sauce as it bakes. Trying to skip it by using all cream creates a sauce that separates and becomes greasy in the oven. Thirty seconds of whisking is all it takes.
Cover with foil for the first hour. This traps steam and ensures the potatoes cook through to tender before the top starts browning. Remove the foil for the last 20 to 25 minutes to achieve that golden, slightly crispy cheese crust on top.
Let it rest before cutting. This is the step most people skip and immediately regret. A freshly pulled scalloped potato dish is liquid under the surface until it sits for 10 to 15 minutes. Resting lets the layers firm up so you can actually serve clean slices rather than a beautiful scoopable mess.
Substitutions and Variations
Potato variety: Yukon Golds are the best choice here since their creamy, waxy texture holds up better in layers than Russets (which can become mealy). Red potatoes are another excellent option. Avoid new potatoes, they don’t layer well.
Cheese variations: Gruyere or Fontina melted into the sauce instead of or alongside cheddar creates an incredibly rich, nutty flavor. A combination of white cheddar, Gruyere, and Parmesan is exceptional if you want to go full cheese board with it.
Add protein: Layer thinly sliced cooked ham between the potato layers before baking. A classic French variation called “Gratin Dauphinois” uses cream and Gruyere only, with no ham, for the purist version.
Make it vegetarian-friendly: Swap chicken broth for vegetable broth. All other ingredients are already vegetarian.
Add heat: Stir 1/4 teaspoon cayenne pepper into the sauce, or layer thin slices of pickled jalapeño between the potato layers for a Southwestern spin.
Heavy cream version: Replace the milk and broth entirely with 2 cups of heavy cream for an ultra-rich, deeply indulgent dish with no roux needed. Bake at 350°F for 1 hour 45 minutes.
Make-Ahead Tips
Full assembly, unbaked: Assemble the entire dish, cover tightly with plastic wrap, and refrigerate up to 24 hours ahead. When ready to bake, remove plastic wrap, cover with foil, and add 15 to 20 extra minutes to the covered baking time since the dish starts cold.
Bake ahead, reheat: Bake fully, cool completely, cover, and refrigerate up to 3 days. Reheat covered with foil at 325°F for 25 to 30 minutes. The texture of reheated scalloped potatoes is excellent, often better than day-of.
Sauce only: Make the cream sauce up to 2 days ahead and store in the refrigerator. Rewarm gently before assembling.
How to Make Cheesy Garlic Scalloped Potatoes
Step 1: Preheat and prep. Preheat your oven to 400°F. Butter a 9×13-inch baking dish generously and set aside.
Step 2: Slice the potatoes. Peel the potatoes. Using a mandoline or very sharp knife, slice to approximately 1/8-inch thickness. Place sliced potatoes in a bowl of cold water as you work to prevent browning. Before using, drain and pat completely dry with paper towels or a clean dish towel. Dry potatoes mean the sauce won’t be diluted by excess moisture.
Step 3: Make the garlic cream sauce. Melt butter in a medium saucepan over medium heat. Add the minced garlic and cook for 1 minute, stirring, until fragrant but not browned. Sprinkle in the flour and whisk continuously for 1 minute to cook out the raw flour taste. This is your roux.
Slowly pour in the milk while whisking constantly to prevent lumps. Follow with the chicken broth, whisking as you pour. Add the minced thyme, dry mustard, smoked paprika, salt, and pepper. Cook over medium heat, whisking regularly, until the sauce thickens enough to coat the back of a spoon, about 4 to 5 minutes. Do not boil aggressively.
Remove from heat. Stir in 1.5 cups of the shredded cheddar and all the Parmesan cheese until fully melted and the sauce is smooth. Taste and adjust salt.
Step 4: Layer the potatoes. Arrange half of the potato slices in overlapping layers across the bottom of the prepared baking dish. Scatter half the sliced onion over the potato layer. Pour half the cheese sauce evenly over the top. Sprinkle with 1/4 cup of the reserved shredded cheddar.
Repeat with the remaining potato slices, remaining onion, and remaining sauce. Finish with the final 1/4 cup of reserved cheddar plus the extra topping cheddar over the very top.
Step 5: Bake covered. Cover tightly with aluminum foil. Bake at 400°F for 60 minutes. The potatoes need this covered time to steam through and become fully tender before the top browns.
Step 6: Bake uncovered. Remove the foil. Continue baking for 20 to 25 minutes until the top is deeply golden and bubbling at the edges. The surface should have that beautiful crackled cheese crust.
Step 7: Rest and serve. Remove from the oven and let rest for at least 12 to 15 minutes before serving. Garnish with fresh chopped parsley. Serve straight from the dish.
Nutritional Information (Per Serving, Based on 10 Servings, Approximate)
| Nutrient | Amount |
|---|---|
| Calories | 380 kcal |
| Protein | 14 g |
| Carbohydrates | 32 g |
| Total Fat | 22 g |
| Saturated Fat | 13 g |
| Sodium | 580 mg |
| Fiber | 3 g |
| Sugar | 4 g |
| Calcium | 25% DV |
| Potassium | 620 mg |
Values are estimates. Using heavy cream instead of milk significantly increases the calorie count per serving.
Fun Fact 🥔
Scalloped potatoes and potatoes au gratin are not the same dish, despite being used interchangeably in most recipes. True “scalloped” potatoes are baked in a cream sauce without cheese on top. “Au gratin” refers specifically to a dish finished with a browned crust, typically from cheese or breadcrumbs. Most recipes labeled “scalloped” today are technically au gratin. Nobody is complaining.
Meal Pairing Suggestions
Cheesy garlic scalloped potatoes go with almost everything, but some combinations are particularly good.
- Holiday centerpiece pairings: Honey-glazed ham, roasted turkey, prime rib. The richness of the potatoes balances the savory char of roasted meats.
- Weeknight pairings: Roasted chicken thighs, pan-seared pork chops, or a simple green salad with vinaigrette to cut through the richness.
- Vegetarian dinner: Serve alongside roasted cauliflower steaks, a lentil salad, or a bright tomato-based soup.
Leftovers and Storage
Refrigerator: Store in an airtight container or covered baking dish for up to 4 days.
Reheating: Cover with foil and warm in a 325°F oven for 20 to 25 minutes. For single portions, microwave in 90-second intervals until heated through. The crust won’t be as crispy, but the interior stays creamy.
Freezing: Scalloped potatoes can be frozen, but the texture of the potatoes after thawing is softer and slightly grainy compared to fresh. If freezing, cut into portions, wrap tightly in plastic wrap and foil, and freeze up to 1 month. Thaw overnight in the fridge and reheat covered in the oven.
FAQ
My sauce has lumps. How do I fix it? Lumps come from adding liquid too fast or from cold milk hitting a hot roux. If the sauce is lumpy, run it through a fine mesh sieve, or use an immersion blender for 30 seconds to smooth it out before using. Next time, add the milk in a slow, steady stream while whisking constantly.
The potatoes are still firm after the full bake time. What went wrong? Likely the slices were too thick. 1/8-inch is the target. Also, make sure the foil was sealed tightly during the covered bake; leaking steam means less heat penetrating the layers. An extra 15 to 20 minutes of covered baking usually fixes underdone potatoes.
Can I use sweet potatoes? Yes, and it’s a great variation. Sweet potatoes take slightly longer to cook through and have a natural sweetness that pairs well with sharp cheddar and nutmeg in the sauce. Slice them the same way and follow the same method.
Can I assemble this in individual portions? Absolutely. Use an 8-ounce ramekin per serving, layer the same way, and reduce bake time to 40 minutes covered and 15 minutes uncovered. Excellent for dinner parties.
Why are my potatoes turning brown before baking? Raw potato flesh oxidizes quickly when exposed to air. Keep sliced potatoes submerged in cold water until you’re ready to use them, then drain and dry thoroughly before layering.
Wrapping Up
Golden. Bubbling. Deeply cheesy with a garlic cream sauce that soaks into every single layer.
Cheesy garlic scalloped potatoes are the side dish that makes a regular dinner feel like a proper occasion without actually requiring an occasion.
Make this for your next gathering, or honestly just for a Tuesday when you need something that genuinely feels like a reward at the end of the day. Then come back and leave a comment. Tell us what cheese combination you used, if you added ham layers, or how long they lasted before someone went back for thirds.
We really do want to know.
