Can I make this French onion potato casserole ahead of time?

Absolutely! You can prepare the layers in advance and store them in the fridge. Just bake it right before serving for a fresh, hot dish.

What can I substitute for Gruyère cheese?

If Gruyère isn’t available, cheddar or mozzarella works well too. Each cheese brings its own unique flavor to this cheesy onion potato bake.

Store any leftovers in an airtight container in the fridge for up to three days. Reheat in the oven for the best texture.

Yes! While starchy potatoes like Russets or Yukon Golds are ideal, you can experiment with red or fingerling potatoes for a different texture.

Definitely! This oven-baked French onion potatoes dish is a crowd-pleaser and makes a fantastic addition to any holiday table.

A creamy and cheesy potato bake inspired by French onion soup, perfect as a comforting side dish for any occasion.

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Preheat the oven to 375°F (190°C).
Peel and slice the potatoes thinly.
Slice the onions and sauté them in butter until caramelized.
In a baking dish, layer the sliced potatoes and caramelized onions.
Pour heavy cream over the layers and season with salt, pepper, and fresh thyme.
Top with shredded Gruyère cheese.
Bake in the preheated oven for about 45-60 minutes, or until the potatoes are tender and the top is golden brown.

For added flavor, you can sprinkle some garlic powder or nutmeg in the layers.
This dish can be prepared ahead of time and baked just before serving.
Feel free to substitute Gruyère cheese with other cheeses like cheddar or mozzarella.