Tortilla Espanola is a thick potato and egg omelet, and it is arguably the most cooked dish in every Spanish home kitchen. You make it by slow-poaching thinly sliced potatoes and onions in olive oil until tender, binding them in beaten eggs, and setting the whole thing in a skillet until it holds its shape but stays soft in the middle.
The dish has no fixed birthplace story that historians agree on, but it has been a staple across Spain since at least the early 1800s, served as tapas, a light lunch, or a bocadillo filling. It's cheap, it travels well at room temperature, and it's forgiving once you understand the one step that actually matters.
What Actually Matters
The potatoes have to be poached, not fried. Submerge thin potato and onion slices in olive oil at a bare simmer, around 250 to 275 degrees F, until they are tender enough to break apart with a spoon but not browned. Browning here means crunchy edges in your finished tortilla instead of the soft, almost melting texture that makes this dish what it is. Give the potatoes real time in that gentle oil bath. Rushing this step is the single most common reason a home tortilla turns out wrong.
Spanish Tortilla Recipe
Serves 4. Prep time: 15 minutes. Cook time: 35 minutes. Total time: 50 minutes.
- 1 1/4 pounds potatoes, peeled and thinly sliced
- 1 medium yellow onion, thinly sliced
- 1 cup extra virgin olive oil
- 6 large eggs
- 1 teaspoon kosher salt, plus more to taste
- 1/4 teaspoon black pepper
- Heat the olive oil in a 10 inch nonstick skillet over medium low heat.
- Add the potatoes and onion. Poach gently at a bare simmer for 20 to 25 minutes, stirring occasionally, until the potatoes are tender but not browned.
- Drain the potatoes and onion in a colander set over a bowl, reserving the oil. Let them cool for 5 minutes.
- In a large bowl, beat the eggs with the salt and pepper. Fold in the drained potatoes and onion, pressing gently so the potatoes soak up the egg.
- Wipe out the skillet and add 2 tablespoons of the reserved oil. Heat over medium heat until shimmering.
- Pour in the egg and potato mixture, pressing it into an even layer. Cook for 3 to 4 minutes, shaking the pan occasionally, until the edges set.
- Slide the tortilla onto a large plate, then invert the skillet over the plate and flip the tortilla back into the pan, uncooked side down.
- Cook for another 3 to 4 minutes, until the tortilla is set on the outside but still soft in the center.
- Slide onto a plate and let rest for 5 minutes before slicing into wedges.
| Nutrient | Per Serving (estimated) |
|---|---|
| Calories | 410 |
| Protein | 13g |
| Fat | 33g |
| Carbohydrates | 19g |
This is a calculated estimate, not lab-verified nutrition data.
Tips, Variations, and Storage
Some cooks add a clove of garlic to the poaching oil for a background note. A version with red bell pepper is also common in some regions. The tortilla keeps well in the fridge for up to 3 days. Serve it cold, at room temperature, or gently rewarmed. Do not microwave it hot, it turns rubbery.
Frequently Asked Questions
Do I need a nonstick skillet?
It makes the flip much easier. A well-seasoned cast iron pan works too, but a sticky pan will fight you.
Can I make it ahead?
Yes. It's traditionally served at room temperature, so making it a few hours ahead is normal, not a compromise.
Why did my tortilla fall apart when I flipped it?
The eggs likely weren't set enough on the first side. Give it another minute before attempting the flip.
Is tortilla espanola the same as an omelet?
No. An omelet is folded and cooked fast. This is a thick, cake-like dish built around potatoes, cooked slower and served in wedges.
What oil should I use?
A mild to medium extra virgin olive oil. You'll strain and reuse it, so don't use your finest bottle.
More from Wine Drop Cookery
This recipe is part of our Spanish recipes collection. If you're building out your kitchen for it, check our kitchen essentials and pots and pans.
Who Is Writing This
I'm Chef Alan. I have spent 35 years in professional kitchens, I have formal culinary education in New Hampshire, and I have been honored as a 6-Time 4-Diamond Chef. More about me here.
If a recipe is missing something you needed, or a step didn't make sense, tell me. Get in touch and I'll fix it.
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