Ingredients:
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6 large eggs
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1 medium potato, thinly sliced
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1 medium onion, thinly sliced
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1/2 cup shredded cheese (Gruyère, cheddar, or both)
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2 tbsp olive oil or butter
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Salt and pepper to taste
Instructions:
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Cook the potatoes and onions: Heat oil in a skillet over medium heat. Sauté sliced potatoes for 5-7 minutes, then add onions and cook until soft and caramelized. Season with salt and pepper.
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Prepare the egg mixture: Beat eggs, season with salt and pepper, and stir in half the cheese.
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Cook the frittata: Pour the egg mixture over the potatoes and onions. Cook on medium-low for 5-7 minutes until edges set. Sprinkle with remaining cheese.
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Broil: Transfer the skillet to a broiler for 2-3 minutes until the top is golden and set.
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Serve: Let cool for a minute, slice, and enjoy!