Print

Scalloped Sweet Potatoes Recipe – Creamy & Cheesy Side Dish

Make this creamy Scalloped Sweet Potatoes Recipe with tender sweet potatoes, garlic cream sauce, and golden melted cheese. Perfect for holidays and family dinners!

Ingredients

1.2 kg (2½ lb) Yukon Gold or russet potatoes, thinly sliced
2 large yellow onions, thinly sliced
2 tbsp butter
1 tbsp olive oil
2 cloves garlic, minced
1½ cups heavy cream
½ cup whole milk
1½ cups grated Gruyère cheese
½ tsp fresh thyme leaves
½ tsp salt
¼ tsp black pepper
Pinch of nutmeg
Fresh parsley or thyme, for garnish

Instructions

Caramelize the onions: Heat butter and olive oil over medium-low heat. Add onions and cook for 25–35 minutes, stirring occasionally, until deeply golden and sweet. Add garlic during the final minute.
Make the sauce: Warm the cream and milk in a saucepan. Stir in thyme, salt, pepper, and nutmeg. Remove from heat and mix in about ½ cup Gruyère.
Layer: Grease a baking dish. Arrange a layer of potatoes, followed by caramelized onions and a little Gruyère. Repeat until everything is used.
Add the cream: Pour the warm cream mixture evenly over the potatoes.
Top with cheese: Sprinkle the remaining Gruyère generously over the top.
Bake: Cover with foil and bake at 190°C / 375°F for 45 minutes. Remove the foil and bake another 25–35 minutes, until bubbling, golden, and the potatoes are fork-tender.
Rest: Let stand for 10–15 minutes before serving so the creamy layers can set.