Baked Tortilla Española with Caramelized Onions
A traditional Spanish potato and egg omelet baked to silky perfection with sweet caramelized onions adding depth and richness. This spanish (vegetarian) ready in about 45 minutes pairs large Yellow onion, thinly sliced, Olive oil, Large eggs for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 280 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.
Ingredients
- 2 medium (about 1 lb) Large potatoes, peeled and thinly sliced
- 1 large Yellow onion, thinly sliced
- 4 tbsp Olive oil
- 6 Large eggs
- 1 tsp Salt
- 1/2 tsp Black pepper
Instructions
- Step 1: Preheat the oven to 375°F. Heat 3 tbsp olive oil in a large ovenproof skillet over medium heat. Add 1 large thinly sliced yellow onion and cook for 12 minutes, stirring often until deeply golden and caramelized.
- Step 2: Add 2 medium peeled and thinly sliced potatoes to the skillet with the onions. Season with 1 tsp salt and 1/2 tsp black pepper. Cover and cook over medium-low heat for 10 minutes, stirring occasionally until potatoes are tender but not browned.
- Step 3: In a large bowl, beat 6 large eggs with a pinch of salt and pepper. Pour the eggs evenly over the potatoes and onions in the skillet. Cook on the stovetop for 3 minutes until the edges begin to set.
- Step 4: Transfer the skillet to the preheated oven and bake for 15 minutes until the tortilla is fully set and lightly golden on top. Let rest for 5 minutes before slicing and serving.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Baked Tortilla Española with Caramelized Onions take to make?
Total time is about 45 minutes (15 min prep + 30 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 Baked Tortilla Española with Caramelized Onions?
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 olive oil from drying out.
Can I substitute ingredients in Baked Tortilla Española with Caramelized Onions?
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 Baked Tortilla Española with Caramelized Onions 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.
Is Baked Tortilla Española with Caramelized Onions vegetarian?
Yes — this recipe is tagged vegetarian based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.
