Frittata

Preheat the oven to 190°C (375°F).

~5 min

Thinly slice the potato and cook it in a pan with olive oil until golden.

~8 min

Why: Pre-browning the potato keeps it from turning soggy in the oven and preserves its texture.

In the same pan, sauté the chopped onion, then add the spinach and cook until wilted.

~4 min

In a bowl, whisk together the eggs, milk, parmesan, salt, and pepper.

~3 min

Spread the cooked potato and vegetables evenly in an oven-safe pan and pour the egg mixture over them.

~2 min

Bake in the preheated oven for 15-18 minutes, until the top puffs slightly and it's fully set.

~17 min

Watch out: If the oven isn't hot enough, the top puffs but the center stays runny — poke with a knife tip; it's done when nothing wet clings to it.

Remove from the oven, let it cool briefly, then slice into wedges and serve.

~3 min