Lunch: Spanish Tortilla

Recipe by The Bon Appétit Test Kitchen This adaptation of the tortilla española from New York's Boqueria starts with potatoes that are slowly cooked in lots of olive oil. There will be plenty of oil left over, but don't worry: Use it to make a garlicky m

Ingredients

1 1/2 cups extra-virgin olive oil
2 pounds large Yukon Gold potatoes, peeled, quartered, cut into 1/4" slices
1 onion, quartered, thinly sliced
2 1/2 teaspoons kosher salt
8 large eggs, beaten to blend

Instructions

Heat oil in a large ovenproof skillet over medium heat. Add potatoes, onion, and salt. Use a heatproof spatula to coat potatoes with oil. When oil begins to bubble, reduce heat to medium-low and cook, turning frequently, until potatoes are tender but not browned, 20-25 minutes.
Using a slotted spoon, transfer potatoes and onion to a large heatproof bowl. Add eggs and stir gently to combine; do not break up potatoes. Strain oil into a glass measuring cup; wipe out skillet.
Heat 3 tablespoons reserved oil from measuring cup in skillet over medium-high heat. Add egg-potato mixture and cook, stirring constantly but gently to keep potatoes intact, until eggs begin to set (eggs will look scrambled), about 2 minutes. Spread mixture in an even layer; reduce heat to medium-low. Preheat broiler to high.
Cook tortilla, shaking pan occasionally to prevent it from sticking, until eggs are nearly cooked through, about 12 minutes. Transfer skillet to oven and broil until top of tortilla is just cooked, about 2 minutes.
Remove from oven. Invert a large plate over skillet. Using oven mitts (skillet and potatoes will be very hot; use caution), hold plate firmly over skillet and flip, releasing tortilla onto plate. Let sit at room temperature for at least 20 minutes and up to 2 hours before serving.

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