Pan-Fried Tortilla Española with Caramelized Onions and Potatoes

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A classic Spanish potato and onion omelette pan-fried to golden perfection with sweet caramelized onions in every bite. This spanish-inspired vegetarian ready in about 45 minutes pairs large yellow onion, thinly sliced, extra virgin olive oil, large eggs for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 320 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 10 min Cook: 35 min Serves 4 Spanish cuisine 320 cal/serving
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Ingredients

Instructions

  1. Step 1: Heat 1/2 cup extra virgin olive oil in a large non-stick skillet over medium heat. Add 3 medium peeled and thinly sliced potatoes and 1 large thinly sliced yellow onion. Cook gently for 20 minutes, stirring occasionally, until potatoes are tender and onions caramelized.
  2. Step 2: In a large bowl, beat 6 large eggs with 1 tsp salt and 1/2 tsp black pepper until combined.
  3. Step 3: Using a slotted spoon, transfer the cooked potatoes and onions to the eggs, mixing gently to coat.
  4. Step 4: Remove excess oil from the skillet, leaving about 1 tbsp. Pour the egg, potato, and onion mixture back into the skillet over medium-low heat.
  5. Step 5: Cook for 5-7 minutes until the edges are set and bottom is golden. Carefully flip the tortilla onto a plate, then slide back into the skillet to cook the other side for another 5 minutes until fully set and golden.
  6. Step 6: Slide tortilla onto a serving plate and let rest for 5 minutes before slicing.

Equipment for this recipe

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Frequently asked questions

How long does Pan-Fried Tortilla Española with Caramelized Onions and Potatoes take to make?

Total time is about 45 minutes (10 min prep + 35 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Pan-Fried Tortilla Española with Caramelized Onions and Potatoes?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep extra virgin olive oil from drying out.

Can I substitute ingredients in Pan-Fried Tortilla Española with Caramelized Onions and Potatoes?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Pan-Fried Tortilla Española with Caramelized Onions and Potatoes for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Pan-Fried Tortilla Española with Caramelized Onions and Potatoes?

Spanish vegetarian like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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