🥔 Old-Fashioned Scalloped Potatoes with Cheddar Cheese

These Old-Fashioned Scalloped Potatoes are rich, creamy, cheesy, and irresistibly comforting! Thinly sliced russet potatoes are layered with sweet onions, fresh garlic, fragrant thyme, and sharp cheddar cheese, then baked in a velvety cream sauce until tender and golden.

The potatoes slowly absorb the garlic-infused cream as they bake, creating soft, flavorful layers beneath a bubbling, golden cheese topping. It’s the perfect homemade side dish for Sunday dinners, holiday feasts, potlucks, and cozy family meals.

Made with simple ingredients and plenty of old-fashioned flavor, this classic comfort food pairs beautifully with roasted chicken, baked ham, steak, or just about any hearty main course.

Recipe Information

• Prep Time: 20 minutes
• Cook Time: 75–90 minutes
• Total Time: Approximately 1 hour 50 minutes
• Servings: 6–8
• Course: Side Dish
• Cuisine: American-inspired
• Difficulty: Easy

Ingredients

For the Scalloped Potatoes

• 2 lb russet potatoes (900 g), peeled and thinly sliced
• 1 small onion, thinly sliced
• 2 cups shredded cheddar cheese (approximately 220 g), divided
• 2 cups heavy cream (480 ml)
• 3 cloves garlic, minced
• 1 teaspoon dried thyme
• 1 teaspoon salt, or to taste
• ½ teaspoon freshly ground black pepper
• 1 tablespoon unsalted butter, for greasing the baking dish
• Fresh parsley, chopped, optional, for garnish

Instructions

Step 1: Prepare the Oven and Baking Dish

Preheat the oven to 375°F (190°C).

Lightly grease a 9 × 13-inch (23 × 33 cm) baking dish with butter. This helps prevent the creamy sauce and potatoes from sticking to the sides.

Set the dish aside while preparing the ingredients.

Step 2: Slice the Potatoes

Peel the russet potatoes and slice them into rounds approximately ⅛ inch (3 mm) thick.

A mandoline slicer makes this task easier, but a sharp knife works well too. Try to keep the slices as uniform as possible so they cook evenly.

If you need to slice the potatoes ahead of time, place them in cold water to prevent browning. Drain and pat them dry thoroughly before assembling the casserole.

Chef’s tip: Avoid slicing the potatoes too thickly, as they may remain firm in the center even when the edges appear fully cooked.

Step 3: Prepare the Garlic Cream Sauce

Pour the heavy cream into a medium saucepan. Add the minced garlic, dried thyme, salt, and black pepper.

Warm the mixture over medium-low heat for approximately 3–5 minutes, stirring occasionally. The cream should become warm and fragrant, but it does not need to boil.

Remove the saucepan from the heat.

Warming the cream briefly helps release the garlic and thyme flavors and makes the sauce easier to distribute throughout the layers.

Step 4: Arrange the First Potato Layer

Arrange approximately one-third of the sliced potatoes in an even layer across the bottom of the prepared baking dish.

Scatter some of the sliced onion over the potatoes, followed by a portion of the shredded cheddar cheese.

Pour a little of the garlic cream over the layer, allowing it to seep between the potato slices.

Step 5: Build the Remaining Layers

Repeat the layering process with the remaining potatoes, onions, cheddar cheese, and garlic cream.

Try to distribute the ingredients evenly so every serving has tender potatoes, sweet onion, melted cheese, and plenty of creamy sauce.

Finish with a layer of potatoes and the remaining cream.

Reserve approximately ½ cup of the shredded cheddar to sprinkle over the top during the final stage of baking. This helps create a beautifully golden cheese topping without overbrowning it too early.

Gently press the layers down with a spatula so the potatoes are mostly coated in cream.

Step 6: Cover and Bake

Cover the baking dish tightly with aluminum foil.

Bake for 45–55 minutes, allowing the potatoes to begin softening and absorb the cream.

After this time, carefully remove the foil and test the center with a thin knife. The potatoes should be beginning to soften, although they may need additional baking.

If they are still quite firm, cover the dish again and continue baking for another 10–15 minutes.

Step 7: Add the Final Cheddar Cheese

Once the potatoes are nearly tender, remove the foil and sprinkle the reserved cheddar cheese evenly over the top.

Return the dish to the oven, uncovered, and bake for another 20–30 minutes, or until the potatoes are completely tender, the cream is bubbling around the edges, and the cheese is melted and golden.

To check for doneness, insert a thin knife into the center. It should slide through the potato layers easily without encountering firm or crunchy pieces.

If the cheese becomes golden before the potatoes are tender, loosely cover the dish with foil and continue baking until the potatoes are cooked through.

Step 8: Let the Potatoes Rest

Remove the scalloped potatoes from the oven and let them rest for 10–15 minutes before serving.

This resting time allows the cream sauce to settle and thicken slightly, making the potatoes easier to portion.

Sprinkle with freshly chopped parsley for a pop of color and fresh flavor, if desired.

Step 9: Serve and Enjoy

Spoon generous portions onto plates, making sure each serving includes plenty of tender potato layers, melted cheddar, and creamy garlic sauce.

Serve warm alongside roasted chicken, steak, baked ham, or your favorite vegetables for a comforting, satisfying meal.

Chef’s Tips for Perfect Scalloped Potatoes

• Slice evenly: Uniform potato slices cook at the same rate and create beautiful layers.
• Use russet potatoes: Their starch helps naturally thicken the cream sauce as the potatoes bake.
• Choose freshly grated cheddar: It generally melts more smoothly than pre-shredded cheese, which may contain anti-caking agents.
• Warm the cream gently: Avoid boiling it before assembly, as excessive heat can cause it to reduce too much.
• Cover during the first stage: The foil traps steam and helps the potato layers soften before the topping browns.
• Check the center, not just the edges: Potatoes near the sides of the dish often cook faster than those in the middle.
• Allow time to rest: The sauce thickens as the casserole cools slightly, producing a creamier texture.
• Season every layer lightly: Even distribution of salt and pepper helps prevent bland potato layers, but remember that cheddar also contributes saltiness.
• Watch the final browning: If the cheese darkens too quickly, loosely cover the dish with foil.

Delicious Variations

Garlic Parmesan Scalloped Potatoes

Replace ½ cup of the cheddar with grated Parmesan cheese for a sharper, more savory flavor.

Cheesy Bacon Scalloped Potatoes

Add ½ cup cooked, crumbled bacon between the potato layers for a smoky, savory twist.

Herb-Infused Scalloped Potatoes

Add 1 teaspoon fresh rosemary or a little chopped sage alongside the thyme for a more aromatic side dish.

Extra-Creamy Scalloped Potatoes

Replace ½ cup of the heavy cream with whole milk and add 2 tablespoons cream cheese, whisking until smooth, for a richer, slightly tangy sauce.

Spicy Cheddar Scalloped Potatoes

Add ¼ teaspoon cayenne pepper or a pinch of crushed red pepper flakes to the cream sauce for a gentle kick.

Onion and Mushroom Scalloped Potatoes

Sauté 1 cup sliced mushrooms with the onion before layering them into the casserole for a deeper, earthier flavor.

Make-Ahead Instructions

You can slice the potatoes and onions, grate the cheese, and prepare the garlic cream in advance. Store each component separately in the refrigerator.

For the best texture, assemble and bake the casserole shortly before serving. If assembling the dish ahead, cover it and refrigerate promptly, then allow additional baking time because the ingredients will be cold.

Alternatively, bake the casserole until the potatoes are tender, cool it safely, and refrigerate it. Add a little cream if needed before reheating, then finish with a fresh sprinkle of cheddar for a golden topping.

Storage Instructions

Refrigerator: Allow the scalloped potatoes to cool slightly, then transfer leftovers to an airtight container. Refrigerate within 2 hours and consume within 3–4 days.

Reheating: Place a portion in an oven-safe dish, add a small splash of cream or milk if the sauce has thickened, and cover loosely with foil. Reheat at 350°F (175°C) until hot throughout. Remove the foil for the last few minutes if you want to refresh the cheesy topping.

Individual portions can also be reheated in the microwave until steaming hot.

Freezing: Cream-based potato casseroles can be frozen, although the sauce may separate slightly after thawing. For best quality, freeze cooled portions in airtight containers for up to 2 months. Thaw overnight in the refrigerator and reheat thoroughly.

Frequently Asked Questions

What’s the difference between scalloped potatoes and potatoes au gratin?

Traditional scalloped potatoes are usually baked in a creamy sauce, while potatoes au gratin typically feature a more prominent cheese topping. This recipe combines the creamy texture of scalloped potatoes with cheddar cheese throughout for an extra-cheesy version.

Why are my scalloped potatoes still hard?

The slices may be too thick, or the casserole may need more time in the oven. Cover the dish again and continue baking until a knife slides easily through the center.

Can I use Yukon Gold potatoes instead of russet potatoes?

Yes. Yukon Gold potatoes have a naturally buttery texture and hold their shape well. The sauce may be slightly less thick because they generally contain less starch than russet potatoes.

Can I substitute milk for heavy cream?

Yes, but the sauce will be thinner and less rich. For a closer result, use whole milk mixed with a little cream cheese, or combine milk and cream if available.

Why is my sauce watery?

The potatoes may not have released enough starch, the casserole may be underbaked, or excess water may have remained on the slices. Make sure the potatoes are well drained if they were soaked, and bake until the center is tender and the sauce has thickened.

Can I make this recipe without peeling the potatoes?

Absolutely. Scrub the potatoes thoroughly and leave the skins on for a more rustic texture. The finished casserole will have a slightly different appearance but will still be delicious.

Serving Suggestions

These Old-Fashioned Scalloped Potatoes pair wonderfully with:

• Roast chicken or turkey
• Baked ham or roasted pork
• Grilled or pan-seared steak
• Meatloaf with gravy
• Roasted green beans or broccoli
• A crisp green salad
• Fresh dinner rolls

They are especially popular at Thanksgiving, Christmas, Easter, and Sunday family dinners. For a complete meal, serve them alongside roasted meat and a fresh green vegetable to balance the richness.

Final Result

These Old-Fashioned Scalloped Potatoes are creamy, cheesy, tender, and full of comforting garlic and thyme flavor. Each spoonful delivers delicate potato layers coated in rich cream, sweet onion, and melted cheddar, finished with a beautifully golden top.

The secret to success: slice the potatoes evenly, cover them while they soften, and uncover the dish for the final cheese-browning stage. Let the casserole rest before serving so the sauce thickens into the perfect creamy consistency.