Half-Baked Spanish Tortilla with Potato and Onion

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

A traditional Spanish omelet using half the potatoes for a lighter, tender texture combined with sweet caramelized onions. This Spanish-inspired recipe, ready in about 35 minutes, combines yellow onion, thinly sliced, large eggs, olive oil into a breakfast that fuels the morning without the midday crash — make-ahead-friendly and balanced enough to anchor the first meal of the day. Each serving lands at about 320 calories and feeds 3, so it sits comfortably in a weekly breakfast rotation alongside fruit, yogurt, or coffee. 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: 25 min Serves 3 Spanish cuisine 320 cal/serving
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Ingredients

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Instructions

  1. Step 1: Heat 1/4 cup olive oil in a 10-inch nonstick skillet over medium heat. Add 2 cups thinly sliced potatoes and 1 medium thinly sliced yellow onion with 1 tsp salt, stirring occasionally, and cook for 15 minutes until potatoes are tender but not browned.
  2. Step 2: In a large bowl, beat 4 large eggs with 1/2 tsp black pepper until blended.
  3. Step 3: Using a slotted spoon, transfer the potato and onion mixture into the eggs, mixing gently to coat. Remove excess oil from the skillet, then pour the egg mixture back into the skillet and cook over medium-low heat for 5 minutes until the edges set.
  4. Step 4: Carefully invert the tortilla onto a plate, then slide it back into the skillet to cook the other side for 4 minutes until fully set and golden. Let cool slightly before slicing.

Frequently asked questions

How long does Half-Baked Spanish Tortilla with Potato and Onion take to make?

Total time is about 35 minutes (10 min prep + 25 min cook). Most home cooks find this fits comfortably into a busy morning; prep components the night before to save active time.

How do I store leftover Half-Baked Spanish Tortilla with Potato and Onion?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat in the microwave or oven; egg- or grain-based items may need a splash of milk or water to refresh texture. Cold-served items (overnight oats, smoothies) keep 2–3 days in the fridge.

Can I substitute ingredients in Half-Baked Spanish Tortilla with Potato and Onion?

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 Half-Baked Spanish Tortilla with Potato and Onion for a different number of people?

The recipe is written for 3 servings. Multiply each ingredient by (your serving target / 3). 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 Half-Baked Spanish Tortilla with Potato and Onion?

Spanish breakfast 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.