No trip to Spain is complete without eating at least one slice of tortilla de patatas. You’ll find it everywhere—from bustling market bars and family-run bodegas to petrol stations, where it’s served by the slice with a side of crusty bread. It’s a dish that speaks to Spain’s genius for making something extraordinary out of the simplest ingredients: potatoes, onions, eggs, olive oil, and salt.

In almost every region we visited—Madrid, Oviedo, San Sebastian, Seville—there was a version of tortilla on offer. Some were runny in the centre, others firm. Some with onion, others without. The version I’ve settled on here is one that reflects our favourite: golden on the outside, tender in the middle, with slow-cooked onions that melt into the layers of potato. It’s the kind of thing you might find alongside Pan con Tomate or jamón ibérico during a late-afternoon aperitivo, or packed into a sandwich for a quick, satisfying lunch on the go.

Why You’ll Love This Recipe

• Classic Spanish comfort food with just five ingredients.
• Make-ahead friendly—perfect for picnics, tapas spreads or weekday lunches.
• Naturally gluten-free and budget-friendly.

To Flip or Not to Flip?

I’ve tried the traditional flip method a few times, and while the results have always tasted amazing, they’ve also been a bit unpredictable—occasionally lop-sided, and more than once a little too dark on the bottom. If I’m cooking for the family, I don’t mind the rustic look, but when I’m entertaining and want a tortilla that looks neat and golden all over, I always go for the grill finish. I have given instructions for both methods in the recipe below.

Tips and Tricks

• Use a waxy potato to help the slices hold their shape.
• Don’t rush the potato/onion step—slow cooking in olive oil gives the best texture and flavour.
• For a firmer centre, extend the stovetop cooking time before grilling. For a looser, creamier centre, reduce it slightly.
• If you’re comfortable flipping, feel free to use the traditional method instead of the grill.

Serving Suggestions

This tortilla pairs beautifully with a simple tomato salad or a glass of crisp cider. It’s also lovely as part of a tapas spread alongside Spanish Garlic Clams, manchego, olives, and a crusty loaf of bread. And if you’ve been following along with my Spanish Series, you’ll know tortilla is one of those dishes that turns up everywhere—on bar tops, picnic blankets, and even in unexpected places like petrol stations, where it’s served simply with a slice of crusty bread and still somehow manages to be completely delicious.

Substitutions

• Onion-free: Traditionalists argue both sides—if you’re in the sin cebolla (no onion) camp, simply omit.
• Add-ins: For a non-traditional twist, try roasted capsicum, chorizo, or cheese—just don’t tell a Spaniard.
• Oil: Use good-quality olive oil for flavour and authenticity, but a neutral oil can be used in a pinch.

Storage

Store leftovers in an airtight container in the fridge for up to 3 days. Best eaten at room temperature or gently warmed.

Final Thoughts

Tortilla de patatas is one of those magical dishes that manages to be humble, satisfying, and full of character all at once. Whether you’re serving it up as part of a tapas night, packing it into a picnic, or slicing it into wedges for lunch, it never feels out of place. I hope this version finds a spot in your regular rotation—just like it has in mine. For another classic Spanish dish that’s simple but full of flavour, try my Spanish Garlic Chicken (Pollo al Ajillo).

Tortilla de Patatas

A classic Spanish potato omelette made with just five ingredients—golden, tender, and perfect for tapas, lunch, or picnics.

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Course: Light Meal, Tapas

Cuisine: Spanish

Keyword: Potato Tortilla, Spanish Potato Omelette, Tortilla de Patatas

Cook Time: 45 minutes minutes

Servings: 6 people

Equipment

• 1 large pan for frying potatoes and onion
• 1 22cm non-stick or well-seasoned frying pan for cooking the Tortilla

Ingredients

• 500 g waxy potatoes like Dutch creams, peeled and thinly sliced (2–3mm thick)
• 1 medium brown onion thinly sliced
• 6 large eggs
• Extra virgin olive oil for frying
• Salt

Instructions

Cook the potatoes and onion

• Heat a generous amount of olive oil (about 1 cup) in a large frying pan (at least 28cm) over low heat. Add the sliced potatoes and onion with a good pinch of salt. The potatoes should be sliced to about 2–3mm thick—roughly the thickness of a coin—so they cook evenly and soften without breaking apart. Stir gently to coat everything in the oil, then cook gently over low heat for 20–25 minutes, stirring occasionally, until the potatoes are completely tender but not falling apart. They should soften and take on a silky texture without browning.
• To test for doneness, try breaking a slice in half with a spoon or spatula—it should give easily with no firmness in the centre.

Drain and cool

• Using a slotted spoon, transfer the potatoes and onions to a colander set over a bowl to drain. Reserve a few tablespoons of the oil. Let cool slightly.

Beat the eggs

• In a large bowl, whisk the eggs with a generous pinch of salt. Gently stir in the cooled potato and onion mixture, being careful not to break up the slices too much. Let sit for 10–15 minutes to allow the flavours to meld.

Cook the tortilla

• Heat 1–2 tablespoons of the reserved oil in a 22cm non-stick or well-seasoned frying pan over medium-low heat (about 4 out of 10 on the dial if using electric or induction). Pour in the egg and potato mixture and gently shake the pan to even out the surface.
• Cook uncovered for 6–8 minutes, or until the base is lightly golden and the edges have just set. You want the bottom to cook slowly without burning—adjust the heat down slightly if it starts browning too fast.
• While it cooks, preheat your grill (broiler) to medium-high—around 220°C / 425°F if your oven has temperature settings, or one level down from the highest setting.
• Once the tortilla has mostly set but the top is still slightly runny, transfer the pan to the grill and cook for 2–4 minutes, or until the top is puffed and lightly golden. Keep a close eye on it—it cooks quickly at this stage.

Optional: Traditional Flip Method

• If you prefer to flip: Place a flat plate over the pan, quickly but carefully flip the tortilla onto it, then slide it back into the pan to cook the other side for another 3–4 minutes. This gives a more traditional result, with a slightly firmer centre.

Rest and serve

• Let the tortilla rest in the pan for at least 10 minutes before slicing. This allows the eggs to finish setting and makes it easier to cut clean slices. Serve warm, at room temperature, or cold the next day.

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