Heat 2 tbsp olive oil in a 20cm cast iron frypan over low/ med heat. Add the onions and cook until caramelised, about 15 minutes. Set aside.
Heat the remaining oil in the frypan over med/ high heat and fry the potatoes until golden and tender.
Preheat oven to 180C. Place the potatoes, onions and eggs in a medium bowl, season with salt and pepper and gently stir to combine, leaving the yolks and whites separate and streaky.
Leave 2 tbsp olive oil in the cast iron pan, heat over medium heat and pour in the tortilla mixture. Cook for 2 minutes, then transfer into the oven and cook until just set, about 8 minutes.
Meanwhile, stir the garlic through the mayonnaise to make the aioli.
Allow the tortilla to cool a little before serving. Spread with the aioli and garnish with basil leaves.
There are no reviews yet. Be the first one to write one.
If you share our passion for great food, sign up for regular recipe ideas to enjoy with your family.