If you are looking for a comforting, flavorful side dish that brings a cozy and elegant touch to your dinner table, this Garlic Scalloped Sweet Potatoes Recipe is just what you need. Imagine tender, thinly sliced sweet potatoes baked in a rich, garlicky cream sauce, layered with the nutty goodness of Gruyère and Parmesan cheeses, and infused with fresh thyme’s subtle aroma. This dish strikes the perfect balance between sweet and savory, creamy and cheesy, making it a guaranteed crowd-pleaser for family dinners or special occasions alike.

Ingredients You’ll Need
These ingredients might be simple, but each one plays an essential role in building the flavor, texture, and inviting golden color of this Garlic Scalloped Sweet Potatoes Recipe. From the sweetness of the potatoes to the rich cream and aromatic thyme, everything comes together beautifully in this dish.
- 2 pounds sweet potatoes: Choose firm, evenly shaped sweet potatoes for uniform thin slicing and sweet, creamy texture.
- 4 cloves garlic, minced: Fresh garlic infuses the dish with a warm, fragrant punch that balances the natural sweetness.
- 3 tablespoons butter: Adds richness and helps meld the flavors in the creamy sauce.
- 2 cups heavy cream: Provides the luscious base for the garlic sauce, ensuring every bite is velvety smooth.
- 1 cup Gruyère cheese, shredded: A superb melting cheese that introduces a subtle nuttiness and depth.
- ¼ cup Parmesan cheese, grated: Brings a sharp, savory edge that enhances the cheese blend on top.
- 1 teaspoon fresh thyme: Adds an earthy, herbal brightness to cut through the richness.
- 1 teaspoon salt: Essential to elevate all the natural and added flavors perfectly.
- ½ teaspoon black pepper: Offers a gentle kick to round out the seasoning.
How to Make Garlic Scalloped Sweet Potatoes Recipe
Step 1: Prepare the Sweet Potatoes
Start by peeling the sweet potatoes and slicing them into thin rounds about 1/8 inch thick. Using a sharp knife or mandoline will help you get consistent slices that bake evenly. Those thin layers create the creamy, tender texture we’re aiming for.
Step 2: Sauté the Garlic
In a saucepan, melt butter over medium heat and add the minced garlic. Sauté for just about one minute until you smell that amazing garlicky aroma—that early step makes all the difference in building flavor that penetrates each slice of potato.
Step 3: Make the Cream Sauce
Next, pour in the heavy cream and toss in the fresh thyme, salt, and black pepper. Warm everything gently until it just begins to simmer, then remove from the heat. This infused cream sauce is the luxurious foundation that will soak into the potatoes during baking.
Step 4: Layer the Potatoes and Sauce
Grease a 9-by-13-inch baking dish thoroughly to prevent sticking. Place half of the sliced sweet potatoes in a slightly overlapping layer. Then pour half of the garlic cream sauce over them evenly, followed by a generous sprinkle of the Gruyère and Parmesan cheeses. These layers promise every forkful will be rich and cheesy.
Step 5: Repeat Layers and Compact
Repeat the layering process with the remaining sweet potato slices, sauce, and cheese. Lightly press down to help everything compact nicely. This step ensures the dish bakes into a cohesive, creamy casserole that holds together on serving.
Step 6: Bake to Perfection
Cover the baking dish with foil and bake at 375°F (190°C) for 30 minutes. Then remove the foil and continue baking for another 25 to 30 minutes until the top is golden brown and bubbly and the sweet potatoes are tender through. That lovely crust on top is the crowning glory!
How to Serve Garlic Scalloped Sweet Potatoes Recipe
Garnishes
A sprinkle of fresh thyme leaves or chopped parsley adds a pop of color and a fresh herbal note that beautifully complements the creamy garlic indulgence beneath. For a little extra crunch, toasted pecans or walnuts sprinkled on top right before serving offer a delightful contrast.
Side Dishes
This Garlic Scalloped Sweet Potatoes Recipe pairs wonderfully with roasted chicken, turkey, or glazed ham. The rich creaminess and mild sweetness balance out savory mains, and it also works well alongside steamed green beans or a crisp green salad to provide textural variety and freshness.
Creative Ways to Present
For a fun twist, try preparing the scalloped sweet potatoes in individual ramekins for elegant individual servings. You can also add a layer of cooked bacon bits between the potato layers for smoky depth. Serve with a drizzle of balsamic glaze to cut through the richness and add a beautiful tangy note.
Make Ahead and Storage
Storing Leftovers
You can store leftover Garlic Scalloped Sweet Potatoes Recipe covered in the refrigerator for up to 4 days. Keep it airtight to preserve moisture and flavors so each reheated portion tastes as rich as freshly baked.
Freezing
This dish freezes well too. Once cooled completely, cover tightly with plastic wrap and foil before placing it in the freezer for up to 3 months. Thaw overnight in the fridge before reheating to maintain the best texture.
Reheating
To reheat, place leftovers in an oven-safe dish, cover loosely with foil, and warm at 350°F (175°C) for about 20-25 minutes until heated through and bubbly again. Avoid microwaving to keep the creamy texture and cheese melt intact.
FAQs
Can I use regular potatoes instead of sweet potatoes?
Absolutely! While sweet potatoes lend a lovely sweetness to this recipe, regular Yukon Gold or Russet potatoes will offer a more traditional scalloped potato dish with a slightly different flavor profile but just as creamy and delicious results.
Is there a dairy-free option for this recipe?
Yes! You can substitute the heavy cream with full-fat coconut milk or cashew cream and use vegan butter and a plant-based cheese alternative. It won’t be quite the same but still rich and comforting.
How thin should the sweet potato slices be?
Try to slice the sweet potatoes about 1/8 inch thick. Thin slices cook evenly and absorb the garlic cream sauce beautifully, creating that signature tender scalloped texture.
Can I make this recipe ahead of time before baking?
Definitely. You can assemble the entire dish, cover it tightly, and refrigerate overnight. When ready, just bake it as directed, adding a few extra minutes if baking from cold.
What cheese can I use if I don’t have Gruyère?
Good alternatives include Swiss cheese, fontina, or mozzarella. These melt well and provide a mild nutty flavor similar to Gruyère, keeping that luscious cheesy quality.
Final Thoughts
I truly hope you give this Garlic Scalloped Sweet Potatoes Recipe a try because it is one of those dishes that feels like a warm hug on a plate. It’s rich yet approachable, elegant yet homey, and so satisfying. Whether for a holiday feast or a special weeknight dinner, this recipe will become a beloved favorite to bring out again and again.
Print
Garlic Scalloped Sweet Potatoes Recipe
- Prep Time: 20 minutes
- Cook Time: 55 minutes
- Total Time: 1 hour 15 minutes
- Yield: 8 servings
- Category: Side Dish
- Method: Baking
- Cuisine: American
Description
This Garlic Scalloped Sweet Potatoes recipe features thinly sliced sweet potatoes baked in a creamy garlic, thyme, and cheese sauce. Layered with Gruyère and Parmesan cheeses, the dish is rich, flavorful, and perfect as a comforting side dish for any meal.
Ingredients
Sweet Potato Layer
- 2 pounds sweet potatoes, peeled and thinly sliced
Garlic Cream Sauce
- 4 cloves garlic, minced
- 3 tablespoons butter
- 2 cups heavy cream
- 1 teaspoon fresh thyme
- 1 teaspoon salt
- 1/2 teaspoon black pepper
Cheeses
- 1 cup Gruyère cheese, shredded
- 1/4 cup Parmesan cheese, grated
Instructions
- Prepare Sweet Potatoes: Peel the sweet potatoes and slice them into 1/8-inch rounds using a sharp knife or mandoline. Ensure the slices are uniform for even baking.
- Make Garlic Butter: In a saucepan over medium heat, melt the butter. Add the minced garlic and sauté for one minute until fragrant, taking care not to burn it.
- Create Cream Sauce: Pour in the heavy cream and add fresh thyme, salt, and black pepper. Heat until the mixture just begins to simmer, then remove from heat to prevent boiling.
- Assemble First Layer: Lightly grease a 9×13-inch baking dish. Arrange half of the sweet potato slices in overlapping layers. Pour half of the garlic cream sauce evenly over the potatoes. Sprinkle with half the Gruyère and Parmesan cheeses.
- Assemble Second Layer: Repeat layering with the remaining sweet potatoes, cream sauce, and cheeses. Press lightly to compact the layers for an even bake.
- Bake Covered: Cover the dish with foil and bake in a preheated oven at 375°F (190°C) for 30 minutes to begin cooking the potatoes through.
- Bake Uncovered: Remove the foil and continue baking for an additional 25–30 minutes until the top is golden brown, bubbly, and the sweet potatoes are tender when pierced with a fork.
Notes
- Use a mandoline slicer for uniform potato slices, which ensures even cooking and texture.
- Gruyère cheese adds a nutty, creamy flavor but can be substituted with Swiss or fontina if unavailable.
- If you prefer less richness, substitute half of the heavy cream with whole milk.
- To add more flavor, sprinkle a pinch of nutmeg into the cream sauce before assembling.
- Leftovers can be refrigerated for up to 3 days and reheated gently in the oven.

