Potato Gratin
Potato Gratin is a classic French dish that layers thinly sliced potatoes with cream and cheese, creating a rich and comforting casserole that is perfect for gatherings or a cozy meal at home.
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Illustrated cooking guide
Step-by-step visual method
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Written method
Instructions
Read through once, then cook at your own pace with the illustrated guide above.
- 1
Preheat your oven to 375°F (190°C).
- 2
Peel the russet potatoes and slice them thinly, about 1/8 inch thick. You can use a mandoline for even slices.
- 3
In a skillet over medium heat, melt the butter and sauté the minced garlic until fragrant, about 1 minute. Be careful not to burn it.
- 4
In a large bowl, combine the heavy cream, sautéed garlic, salt, and black pepper. Stir well to combine.
- 5
In a buttered baking dish, layer a third of the sliced potatoes. Pour a quarter of the cream mixture over the potatoes and sprinkle with one third of the grated Gruyère cheese.
- 6
Repeat the layering process two more times until all ingredients are used, ending with a top layer of cream and cheese.
- 7
Cover the dish with aluminum foil and bake in the preheated oven for 30 minutes.
- 8
Remove the foil and bake for an additional 30 minutes, or until the top is golden brown and the potatoes are tender when pierced with a fork.
Cook notes
Tips
Let the gratin rest for a few minutes after baking to allow it to set before serving.
Use fresh Gruyère cheese for a richer flavor.
Adjust the thickness of potato slices based on personal preference.
Cook smarter
Helpful notes
Practical storage, serving, swap, and troubleshooting notes for a better first try.
Storage Tips
- Store leftovers in an airtight container in the refrigerator for up to 3 days.
- Reheat in the oven at 350°F (175°C) for best results, covering with foil to prevent drying out.
Substitutions
- Instead of Gruyère, use Swiss cheese for a similar flavor.
- If heavy cream is unavailable, whole milk can be used, but the texture may be lighter.
What to Serve With
- A simple green salad with vinaigrette.
- Roasted vegetables for a complete meal.
- Crusty French bread to soak up the creamy sauce.
Common Mistakes
- Don't slice the potatoes too thick, or they won't cook through properly.
- For best flavor, avoid using pre-grated cheese as they contain anti-caking agents.
Recipe FAQ
Can I use other types of cheese?
Yes, cheeses like Emmental or even cheddar can work well in gratin.
How do I know when the gratin is done?
It should be bubbly and golden brown on top, and the potatoes should be tender.
Can I prepare this dish ahead of time?
Yes, you can assemble the gratin a day in advance and bake it when ready to serve.
Kitchen tools
Helpful Tools for This Recipe
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Rice cooker
Good for steady rice, grains, and meal-prep bowls.
Baking sheet
Useful for roasting, baking, broiling, and sheet-pan prep.
Chef knife
A basic prep tool for vegetables, herbs, aromatics, and proteins.
Cutting board
Keeps prep organized for chopping, slicing, and staging ingredients.
Measuring spoons
Useful for balancing spices, salt, acids, and sauces.
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