Mushroom & Kale Frittata – Golden Baked Egg Skillet
A tender baked frittata packed with sautéed mushrooms and curly kale, finished with Parmesan and thyme. A one-pan brunch or light dinner in about 30 minutes.
The secret is cooking the vegetables properly before the eggs go in. Sauté the mushrooms until their moisture releases and they turn deeply golden — that browning carries real flavour. Wilt the kale right in the same pan, then pour over the whisked eggs and let it set low and slow.
It’s wonderful warm from the oven with a bright green salad, or at room temperature cut into wedges for a picnic or lunchbox. Leftovers keep beautifully and reheat in seconds.
Ingredients
- 8 large eggs
- 2 tablespoons olive oil
- 250 g (8 oz) mushrooms, sliced
- 2 big handfuls (about 60 g) curly kale, stems removed, roughly chopped
- 1 small onion, diced
- 2 garlic cloves, minced
- 1/4 cup (25 g) grated Parmesan, plus extra to finish
- 2 tablespoons fresh thyme leaves (or 1 teaspoon dried)
- 1/4 cup (60 ml) milk or water
- Salt and black pepper to taste
Instructions
- Preheat the oven to 190°C (375°F). Whisk the eggs with the milk, half the Parmesan, thyme, salt and pepper in a large bowl.
- Heat the olive oil in an oven-safe skillet (about 24 cm) over medium-high heat. Add the mushrooms and cook, stirring occasionally, for 6 to 7 minutes until they release their moisture and turn golden.
- Add the onion and garlic and cook for 2 minutes until softened, then stir in the kale and cook for another 2 minutes until just wilted. Season lightly.
- Spread the vegetables evenly across the pan and pour the egg mixture over the top. Give the pan a gentle shake to settle everything.
- Cook on the hob for 2 minutes without stirring, so the base starts to set, then scatter over the remaining Parmesan.
- Transfer the skillet to the oven and bake for 12 to 14 minutes, until the centre is set and the top is puffed and golden. Rest for 5 minutes before slicing.
Cook’s tips
- Don't rush the mushrooms — browning them properly is what gives the frittata its savoury depth.
- A slight jiggle in the middle is fine; it firms up as it rests. Overbaking makes it dry.
- Use an oven-safe non-stick or cast-iron skillet; if your pan isn't oven-safe, transfer the mixture to a greased baking dish.
Substitutions
- Swap kale for spinach, Swiss chard or rocket — just add leafy greens in the last minute so they don't overcook.
- Creamy feta or goat cheese can replace the Parmesan for a tangier finish.
- Add a pinch of chilli flakes or smoked paprika for warmth.
Storage & reheating
Refrigerate leftover frittata wedges in an airtight container for up to 3 days. Reheat gently in a skillet or the oven; it's also lovely eaten cold.
FAQ
What makes a frittata different from an omelette?
A frittata is a thick, baked egg dish where the vegetables are folded into the eggs and the whole thing is set in the oven — whereas an omelette is thin and folded around a filling.
How do I know when the frittata is done?
The centre should be just set with a slight wobble, and the top puffed and golden. It continues to firm up as it rests for a few minutes.
Can I make this frittata dairy-free?
Yes. Skip the Parmesan and use a splash of plant milk, or add a couple of tablespoons of nutritional yeast for a cheesy flavour.
