Classic Spanish potato omelet. Simple ingredients transformed into a beloved comfort food dish.

Heat olive oil in large non-stick skillet over medium heat.
Add potatoes and onion, cook gently 15-20 minutes until tender.
Drain potatoes and onions, reserving oil.
Beat eggs with salt and pepper in large bowl.
Fold warm potatoes into beaten eggs. Let stand 5 minutes.
Heat 2 tbsp reserved oil in clean skillet. Add egg mixture.
Cook 5-6 minutes, then flip with plate. Cook 3-4 minutes more until set.