Description
A warm, cheesy, and comforting side dish perfect for cozy dinners, family gatherings, or holiday meals. This gratin combines tender sweet potatoes, rich garlic cream, and a golden layer of melted cheese, creating a dish that is both indulgent and wholesome. Inspired by classic French gratins, it’s easy to prepare and guaranteed to impress.
Ingredients
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4 medium sweet potatoes, peeled and thinly sliced
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2 tablespoons unsalted butter
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4 cloves garlic, minced
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1 cup heavy cream
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1 teaspoon salt
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½ teaspoon black pepper
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½ teaspoon ground nutmeg (optional)
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1 ½ cups shredded Gruyère cheese (or cheddar)
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½ cup grated Parmesan cheese
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2 tablespoons fresh thyme leaves (optional, for garnish)
Instructions
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Preheat your oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish.
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In a small saucepan, melt butter over medium heat. Add minced garlic and sauté for 1-2 minutes until fragrant.
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Stir in heavy cream, salt, pepper, and nutmeg. Heat gently until warm, then remove from heat.
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Arrange a layer of sweet potato slices in the prepared baking dish, slightly overlapping. Pour a portion of the cream mixture over the potatoes and sprinkle with a handful of Gruyère cheese.
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Repeat layering with remaining sweet potatoes, cream, and cheese, finishing with a generous layer of Gruyère and Parmesan on top.
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Cover the dish with aluminum foil and bake for 30 minutes. Remove foil and bake for an additional 25-30 minutes, until sweet potatoes are tender and the top is golden and bubbly.
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Let the gratin rest for 5-10 minutes before serving. Garnish with fresh thyme leaves if desired.
Notes
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Use a mandoline slicer for evenly thin sweet potato slices for uniform cooking.
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Gruyère provides a nutty flavor; cheddar or a mix of cheeses works well too.
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Make ahead: Assemble and refrigerate up to 24 hours before baking.
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For extra crispiness, broil the top for 2-3 minutes at the end of baking.
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Experiment with herbs like rosemary or sage to enhance flavor.
- Prep Time: 15 minutes
- Cook Time: 55-60 minutes