
Made with AI
Preheat the oven to 190°C (375°F).
Place the diced potatoes in a saucepan and cover them with water. Bring to a boil, then simmer for 6–8 minutes, until just tender but not falling apart. Drain thoroughly.
Whisk the eggs and liquid egg whites together in a large bowl until evenly combined. Stir in half of the crumbled feta and half of the chopped parsley and chives.
Heat the olive oil in a large oven-safe, nonstick skillet over medium-high heat.
Add the sliced mushrooms and cook for 5–6 minutes, stirring occasionally, until their released moisture has evaporated and they begin to brown.
Add the diced red bell pepper and cook for 3–4 minutes, until slightly softened.
Add the baby spinach in batches and cook for 1–2 minutes, stirring, until wilted. Add the drained potatoes and gently distribute all the vegetables in an even layer.
Pour the egg mixture evenly over the vegetables. Reduce the heat to medium-low and cook without stirring for 4–5 minutes, until the edges begin to set.
Sprinkle the remaining feta over the top, then transfer the skillet to the preheated oven.
Bake for 12–16 minutes, until the center is set and the top is lightly golden. The eggs should reach an internal temperature of at least 71°C (160°F).
Remove the frittata from the oven and let it rest for 5 minutes. Garnish with the remaining parsley and chives, slice into wedges, and serve.