Peel the potatoes and onion and cut them evenly into small cubes.
Take your eggs out of the fridge and let them reach room temperature.
Cook the bacon so it is crispy. Use the air fryer for faster and great results.
Remove the excess fat with cooking paper and let the bacon cool. Cut in into small pieces.
Simultaneously, heat the vegetable oil that you will use to fry the potatoes.
Once the oil is hot, pour the potatoes in. Fry and stir them regularly until tender, crispy and golden.
Remove the potatoes from the oil and pour them over cooking paper to remove excess fat. Let it cool down.
In a bowl, crack the eggs and beat them. Add the potatoes and raw onions and season with salt and freshly ground black pepper.
Pour the oil into the frying pan to make your Spanish omelet. Turn on your stove and let the oil heat.
Once the oil is hot, reduce the heat and pour the egg mixture. Put a lead on your pan so the tortilla cooks evenly and fast.
Cook for about 3 minutes before flipping the Spanish omelet variation.
Let it cook for between 2 to 3 minutes, depending on how moist you like your omelet.
Remove from fire and transfer to a plate.
Sprinkle parmesan cheese and green onions. Optional
Enjoy