Gluten-Free Steamed Potato Egg Tortilla
A delicate savory custard-like tortilla layered with steamed potato and onion, cooked gently in a low-heat oven until set. The accompanying fresh basil tomato sauce is bright and herbaceous, made from oven-steamed tomatoes blended with garlic and basil. Serve warm or at room temperature for brunch, lunch, or light dinner. This version uses full-steam oven cooking for moist results and maintains eggs as the binding agent without cream, letting potato and cheese shine.
Ingredients
- 1 lb potato, peeled
- 5 egg, whole
- 1 onion, peeled
- ½ cups Parmesan cheese, grated
- 4 tablespoon olive oil
- 1 pinch ground nutmeg
- salt
- ground black pepper
- 1 ¼ lb tomato, whole
- 2 clove garlic, peeled
- ⅓ oz fresh basil, leaves picked
Instructions
- 1
Steam tomatoes at 212°F for 3 minutes until skin loosens. Peel, quarter, seed, and reserve.
- 2
Mince garlic and finely chop one onion for the sauce.
- 3
Slice potatoes and remaining onion quarters in a food processor.
- 4
Season sliced potatoes and onion with salt, pepper, and nutmeg. Toss with 1.5 tablespoon oil on first tray.
- 5
Season peeled tomatoes, minced onion, and garlic with salt, pepper, and 1.5 tablespoon oil on second tray.
- 6
Steam both trays at 212°F for 15 minutes. Cool completely.
- 7
Whisk eggs with a fork in a bowl.
- 8
Fold steamed potatoes, onions, and grated Parmesan into eggs with a spatula.
- 9
Heat 1 tablespoon oil in an oven-safe pan over medium-high heat. Add egg mixture and cook 1 minute on stovetop.
- 10
Transfer pan to oven preheated to 250°F and bake in medium humidity mode for 25 minutes until set.
- 11
Blend steamed tomato mixture with picked basil leaves 3-6 pulses until combined.
- 12
Invert tortilla onto a plate using another plate as a lid. Garnish with basil leaves and serve with sauce warm or cold.
Tips
Keep all oven-cooked components on separate trays so potato steams dry while tomato releases moisture, ensuring proper texture contrast.
When flipping the tortilla, use a flat plate wider than the pan and flip confidently in one swift motion to prevent breakage.
Pulse the tomato-basil sauce gently; over-blending releases excess liquid and dulls basil flavor.
Good to Know
Refrigerate tortilla in an airtight container up to 3 days. Store sauce separately up to 2 days. Both can be gently reheated or served cold.
Prepare steamed potato and tomato components through cooling up to 1 day ahead. Make sauce same day or morning-of. Assemble and bake tortilla within 2 hours of serving.
Serve warm from oven or at room temperature. Slice into wedges. Spoon basil tomato sauce alongside or underneath. Pairs with green salad and crisp white wine.
Common Mistakes
Do not skip the cooling step after steaming to avoid scrambling eggs when mixed with still-hot vegetables.
Do not use high humidity or wet vegetables in the final bake to prevent a wet, soupy center.
Do not over-pulse the sauce to avoid splitting oil and creating bitter taste from overworked basil.
Substitutions
Dairy-Free Swaps
General Alternatives
FAQ
Can I make this without a steam oven?
Yes. Boil potatoes until tender (12-15 min), then drain well. Blanch tomatoes in boiling water 30 seconds, peel, and heat gently in a skillet with garlic and onion until soft. Bake the egg mixture at 120C in a regular oven for 25-30 minutes.
What if my tortilla won't flip cleanly?
Ensure the egg is fully set and the edges are dry; underbaking causes sticking. Use a non-stick or well-oiled pan. Place a flat plate over the pan, grip both firmly, and flip in one confident motion away from your body.
How long can I keep leftover tortilla and sauce?
Refrigerate tortilla in an airtight container up to 3 days. Store sauce separately up to 2 days. Reheat tortilla gently in a 100C oven for 10 minutes to maintain texture. Sauce is best served cold or at room temperature.