Pin It This fluffy frittata layers wilted spinach, sautéed onion and garlic, and tangy crumbled feta in an ovenproof skillet. Eggs are whisked with a splash of milk, folded with half the cheese, poured over the greens, then finished in the oven until set and lightly golden.
Let it rest a few minutes before slicing. Serves four; swap in chard or kale, or add sun-dried tomatoes for extra brightness.
The smell of garlic hitting olive oil on a lazy Sunday morning is enough to make anyone forget about sleeping in. My neighbor once knocked on my door at nine in the morning asking what was cooking because the hallway smelled incredible. That was the morning this spinach frittata with feta earned its permanent spot in my weekend rotation. It is simple, forgiving, and endlessly adaptable.
I once made this for a group of friends who claimed they did not like spinach and watched every single slice disappear before the coffee finished brewing.
Ingredients
- Fresh spinach (5 oz): Fresh baby spinach wilts down beautifully and adds vibrant color without being watery like frozen spinach can be.
- Onion (1 small, diced): A humble onion forms the sweet aromatic base that makes the whole frittata feel rounded and complete.
- Garlic (2 cloves, minced): Fresh garlic is nonnegotiable here because it perfumes the oil and flavors every bite from the bottom up.
- Eggs (6 large): Good eggs with deep yellow yolks will give you a richer flavor and a more golden finished frittata.
- Milk (1/4 cup): A splash of milk keeps the eggs tender and fluffy but cream works beautifully if you want something more indulgent.
- Feta cheese (1/2 cup, crumbled): The salty tang of feta cuts through the mild eggs and spinach perfectly so use a good quality block if you can find one.
- Salt and black pepper (1/4 tsp each): Seasoning modestly lets the feta shine since the cheese itself brings plenty of saltiness.
- Dried oregano (1/4 tsp, optional): A small pinch grounds the dish in Mediterranean flavors and makes it taste more intentional.
- Nutmeg (pinch, optional): This is an old trick from Greek cooking where a tiny amount of nutmeg elevates spinach in the most surprising way.
- Olive oil (2 tbsp): Use a decent olive oil since you are building flavor right in the pan from the very first step.
Instructions
- Preheat and prepare:
- Set your oven to 375 degrees Fahrenheit and make sure your ovenproof skillet is ready to go because you will need to move quickly once the eggs are poured.
- Soften the aromatics:
- Heat olive oil in the skillet over medium heat and cook the diced onion for about three minutes until it turns translucent and sweet smelling then add the garlic for just thirty seconds until fragrant.
- Wilt the spinach:
- Toss in the chopped spinach and stir gently for two to three minutes watching it collapse into a fraction of its original volume.
- Whisk the eggs:
- In a bowl combine the eggs milk salt pepper oregano and nutmeg then whisk until smooth and fold in half of the crumbled feta.
- Combine in the pan:
- Pour the egg mixture evenly over the wilted spinach and give the pan a gentle shake so everything settles into place beautifully.
- Top with remaining feta:
- Scatter the rest of the feta across the surface making sure each slice will get at least a few salty crumbles.
- Set the edges on the stove:
- Cook over low heat for two to three minutes until you see the edges pulling away from the sides of the pan and firming up slightly.
- Finish in the oven:
- Transfer the skillet to the oven and bake for ten to twelve minutes until the center is set and the top has turned a lovely light gold.
- Rest and serve:
- Let the frittata sit for a few minutes before slicing because it will finish setting and hold its shape much better when you serve it warm or at room temperature.
Pin It There is something deeply satisfying about pulling a golden frittata from the oven and slicing into it while steam curls up from the first piece.
Perfect Pairings
Serve this alongside a simple arugula salad dressed with lemon juice and olive oil for a meal that feels complete without any fuss.
Smart Swaps
Kale or Swiss chard work in place of spinach if that is what you have though you may need an extra minute to wilt tougher greens.
Storage and Leftovers
This frittata keeps well in the refrigerator for up to three days and reheats gently in a low oven or even eats cold straight from the fridge which makes it a quietly excellent lunch option.
- Wrap leftovers tightly so the eggs do not absorb refrigerator odors.
- A quick reheat in a skillet restores the texture better than microwaving.
- Always let the frittata cool completely before covering and storing.
Pin It Once you master this basic technique you will find yourself tossing in whatever needs using up from the fridge and calling it dinner without a second thought.
Recipe Questions & Answers
- → Can I use frozen spinach?
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Yes. Thaw and thoroughly squeeze out excess moisture before adding to the skillet to avoid a watery base and ensure proper setting.
- → How do I prevent the edges from burning?
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Cook on low heat on the stove until edges begin to set, then transfer to a preheated oven. Use an ovenproof skillet and check at the earlier end of the baking time.
- → What can I substitute for feta?
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Crumbled goat cheese or ricotta salata offer similar tang and texture; for milder flavor, try shredded Swiss or mozzarella—and adjust salt accordingly.
- → How should leftovers be stored?
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Cool to room temperature, then refrigerate in an airtight container for up to 3 days. Reheat gently in a low oven or skillet to preserve texture.
- → Can I make it ahead of time?
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Yes. Assemble and bake, then refrigerate. Rewarm slices before serving, or bake the assembled skillet from chilled for a few extra minutes until heated through.
- → What pan size works best?
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A 10–12 inch ovenproof skillet gives even cooking and a nice thickness. If using a larger pan, reduce baking time or increase eggs to maintain height.
