A delightful and hearty dish combining caramelized onions and tender potatoes, topped with a cheesy crust.
Melt the butter in a frying pan over medium heat.
Use unsalted butter to control the salt level in the dish.
Add the onions and sauté until golden brown, stirring occasionally.
Cook the onions slowly to bring out their natural sweetness.
Preheat your oven to 350°F (175°C).
Ensure the oven is fully preheated for even cooking.
Grease a baking dish with butter.
Use a baking dish with high sides to prevent overflow.
Layer half of the potato slices in the dish, overlapping slightly.
Slice the potatoes thinly for even cooking.
Season the potatoes with salt and pepper, then add half of the caramelized onions and cheese.
Distribute the onions and cheese evenly for consistent flavor.
Repeat the layering process with the remaining potatoes, onions, and cheese.
Press down gently to compact the layers.
Pour the cream evenly over the top.
Ensure the cream is evenly distributed for a creamy texture.
Bake in the preheated oven for 50 minutes, or until the potatoes are tender and the top is golden brown.
Check the potatoes with a fork to ensure they are fully cooked.
Let the gratin rest for 10 minutes before serving.
Resting allows the layers to set for easier serving.
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