Preheat your oven to 375°F (190°C).
Drizzle 1 tablespoon of olive oil into an oven-proof non-stick frying pan over medium-high heat.
Scrub and dice 600 grams of potatoes into 1cm cubes.
Add these to the pan and cook for about 10-12 minutes until they're golden.
Trim and finely slice the bunch of spring onions, then add them to the pot with the potatoes.
Trim the tough end off the 375-gram head of broccoli, finely chop the remaining part, and add to the frying pan.
Crack 6 large eggs into a bowl.
Season with salt and pepper, then whisk until well combined.
Pour the egg mixture into the pan over the vegetables.
Transfer the frying pan to the preheated oven.
Bake the frittata for around 20 minutes, or until it is set and slightly golden on top.