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Spanish Potato-Onion Omelet with Spinach Recipe

Contributors: Roberta Duyff, MS, RD, FAND

Published: March 27, 2018

Spanish Potato-Onion Omelet with Spinach Recipe
Rebecca Clyde, MS, RDN, CD

Called tortilla Española throughout Spain, this traditional dish often is called a potato-onion omelet. Not to be mistaken with Mexican tortillas — made with corn or wheat — in Spanish cuisine, a tortilla is made of sliced potatoes and onion, pan-fried in olive oil in a skillet, then layered with beaten eggs, and oven-baked until the eggs are cooked until firm. This variation uses less olive oil and adds tomatoes and spinach, making it a nourishing entrée for a light supper or brunch.


2 tablespoons olive oil
1½ pounds (about 2½ cups) unpeeled Yukon Gold or red-skinned new potatoes, thinly sliced
1 cup thinly-sliced red onion
2 cloves garlic, minced
½ cup chopped sun-dried tomatoes*
1 tablespoon chopped fresh rosemary or 1 teaspoon dried rosemary
1 tablespoon chopped fresh thyme or 1 teaspoon dried thyme
½ teaspoon smoked paprika
3 cups chopped fresh spinach
4 large eggs
4 large egg whites**
½ teaspoon salt
½ teaspoon freshly-ground pepper
Parsley sprigs, for garnish (optional)


Before you begin: Wash your hands.

  1. Preheat the oven broiler.
  2. Heat the olive oil in an oven-proof non-stick skillet over medium heat. Add the potatoes, onion and garlic; combine to coat the mixture with olive oil. Cook for about 10 minutes, stirring frequently to prevent sticking until the potatoes are tender, yet still firm. (Add more oil if needed.) Remove from the heat.
  3. Mix the sun-dried tomatoes, rosemary, thyme and paprika into the potato-onion mixture in the skillet. Fold in the spinach.
  4. Separately, lightly whisk the eggs, egg whites, salt and pepper in a medium bowl.
  5. Pour the eggs over the spinach-potato-onion mixture. Return to the heat. As the eggs cook, shake the skillet so the egg mixture flows to the other ingredients. Use a spatula to gently raise the edges of the tortilla so the uncooked eggs flow underneath.
  6. As the edges of the tortilla begin to set, remove put the skillet from the stove top and place it under the oven broiler. Broil for about 5 minutes, or until the top becomes golden brown and the eggs are set. Remove from the broiler with a hot pad; cool slightly so you can handle the skillet.
  7. Slide the spatula around the edges and underneath the tortilla. Gently slide the tortilla from skillet onto a serving plate. Allow to cool for about 5 minutes before serving. Cut in wedges. Serve hot or at room temperature. Garnish with parsley.

Cooking Notes

  • *If you prefer, substitute roasted red peppers for sun-dried tomatoes.
  • **Egg whites are used to reduce the cholesterol. Substitute 2 large eggs for 4 large egg whites if desired.

Nutrition Information

Serves 6 to 8

Calories: 230; Calories from fat: 70; Total fat: 8g; Saturated fat: 2g; Trans fat: 0g; Cholesterol: 140mg; Sodium: 390mg; Total carbohydrate: 30g; Dietary fiber: 4g; Sugars: 4g; Protein: 11g

Roberta Duyff, MS, RD, FAND, is author of Academy of Nutrition and Dietetics Complete Food and Nutrition Guide and 365 Days of Healthy Eating.

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