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Instructions:
- Preheat the oven to 375°F (190°C). Butter a 9×13 baking dish.
- In a saucepan, melt the butter and cook the minced garlic for 1 minute.
- Add the heavy cream, milk, salt, pepper, paprika, and nutmeg. Warm gently without boiling.
- Lay a thin layer of potatoes in the prepared dish.
- Spoon some of the warm cream mixture over the potatoes and sprinkle with a blend of cheddar, mozzarella, and Gruyère.
- Continue layering potatoes, cream, and cheeses until all ingredients are used.
- Finish with Parmesan and a final sprinkle of cheddar.
- Cover the dish with foil and bake for 30 minutes.
- Remove the foil and bake another 20 to 30 minutes, or until golden, bubbling, and the potatoes are tender.
- Let the gratin rest for 10 minutes before slicing to allow the layers to set.
Variations
- Mix in caramelized onions for added sweetness and depth.
- Add crispy bacon or pancetta between layers for a smoky twist.
- Swap Gruyère for fontina or Swiss cheese to change the flavor profile.
- Add thin slices of sweet potato for color and contrast.
- Stir fresh thyme into the cream mixture for aromatic herbal notes.
Tips
- Use a mandoline slicer for evenly thin potato slices and the silkiest texture.
- Warm the cream mixture before layering to ensure even cooking.
- Don’t skip the resting time—it keeps the gratin neat and creamy.
- Use freshly shredded cheeses for the best melt and smoothest sauce.
- For maximum golden color, broil the top for 1–2 minutes at the end.