Baked Onion-Walnut Frittata Recipe on Food52 (2024)

Cast Iron

by: Nicholas Day

June23,2014

3.7

3 Ratings

  • Serves 4 to 6

Jump to Recipe

Author Notes

Very lightly adapted from Martha Rose Shulman's The Simple Art of Vegetarian Cooking. It's a perfect, dead-simple brunch dish, not least because once you put it in the oven, you can tend to everything else that has to be done. I've included Shulman's melted onions recipe here, but feel free to substitute your own version of caramelized onions. (Or your own filling period. The template for the baked frittata is what's most important here.) And finally, if you don't have Greek yogurt, I've strained regular yogurt for just an hour or so before baking this. It's worked plenty well enough. —Nicholas Day

  • Test Kitchen-Approved
Ingredients
  • Melted Onions
  • 1 poundonions, either chopped or thinly sliced
  • 2 tablespoonsolive oil
  • 1 teaspoonfresh thyme leaves
  • 1 garlic clove, minced
  • Frittata
  • 2 tablespoonsolive oil
  • 6 eggs, large
  • 1/2 cupGreek yogurt
  • 1/3 cupwalnuts, finely chopped
  • 1/4 cupfresh parsley, finely chopped
Directions
  1. Melted Onions
  2. In a large skillet, warm the olive oil over medium heat and then add the onions and cook, stirring, until they soften, about five minutes or so. Then add 1/2 teaspoon sea salt, the thyme and the minced garlic. Turn the heat to low and cover. Cook, stirring frequently, for another 30 to 40 minutes, or until the onions are very soft and lightly colored but not browned.
  1. Frittata
  2. Preheat the oven to 350 degrees F.
  3. Add the olive oil to a large skillet, ideally cast iron, brushing the sides with the oil. Then place the pan in the hot oven for five minutes.
  4. While the pan is heating up, whisk the eggs in a large bowl. Season with salt and pepper and whisk in the yogurt. Then stir in the melted onions (above), the walnuts and the parsley.
  5. Remove the skillet from the oven and pour in the egg mixture. It should sizzle. Return the skillet to the oven and bake until puffed and lightly colored, about 30 minutes. Serve hot, warm, or at room temperature.

Tags:

  • Frittata
  • Egg
  • Onion
  • Parsley
  • Thyme
  • Walnut
  • Make Ahead
  • Serves a Crowd
  • Cast Iron
  • Spring
  • Summer
  • Fall

See what other Food52ers are saying.

  • Neil Feder

  • krikri

  • MisoForBreakfast

  • AntoniaJames

Recipe by: Nicholas Day

I'm the author of a book on the science and history of infancy, Baby Meets World. My website is nicholasday.net; I tweet over at @nicksday. And if you need any good playdoh recipes, just ask.

Popular on Food52

9 Reviews

Neil F. December 1, 2018

Sorry but this recipe was a disaster for me. After all that cooking and baking, I was left with a wet spongy brown colored mess. Will never make again

krikri November 21, 2015

I confess I only used this recipe as a springboard, but if my result was anything like the intended result, this is fabulous. I used large quantities of whatever we had in the fridge, including spinach and the recommended walnuts. We had fewer eggs than I expected (three!) but no matter. It all went in and it was delicious.

MisoForBreakfast April 5, 2015

I made this for Easter brunch and it was amazing! The melted onions were absolutely delicious, and I added a bit of fresh thyme to the egg mixture so that I could get the depth of the cooked thyme in the onions but still retain some of that fresh herbal flavor in the dish. Everyone loved it.

Katie D. April 3, 2015

this may be a silly question, but is a 12 inch skillet too big for this recipe?

macfadden April 1, 2015

This was very tasty, though with caramelizing the onions and baking the frittata it is a weekend dinner for me. Like another commenter, I was worried about cooking the garlic for that long, but it turned out fine, and the thyme didn't suffer from half an hour of cooking, either.

dafefe July 20, 2014

A few modest pointers; first the melted onions can be prepared in less time, the trick is adding small amount of warm broth to the mixture, and only enough time, to let the broth and vegetables cook together, with excess moisture boiled away (5to 7 minutes), adding the herbs last minute(cooking fresh basil or thyme for 40 minutes is a heresy); second, you may heat the frying pan for Frittata, on medium heat, by itself. And add the cold oil to hot pan and then the egg, onion mixture which later can be placed in preheated 350 degree oven, with cover on. The whole, idea of Frittata is a quick egg dish.
Now, the truth is baba, used to slow bake the egg Frittata, in a 250 degree oven, for an hour. Her ingredients were all mixed fresh, without pre cooking, and poured into hot pan, and hour long slow baking. By my own admission the flavors were well amalgamated. But then it was 1950s. Things change.

AntoniaJames October 23, 2014

Thank you, dafefe for the tips. ;o)

Chickenfog July 6, 2014

Hmmm, curious if anyone actually made this exactly as written. Cooking minced garlic for 40 minutes? How does it not burn no matter how low you set the heat?

VA T. July 9, 2014

the moisture from the 'melting onions' keeps the garlic sufficiently hydrated. have done this several times.

Baked Onion-Walnut Frittata Recipe on Food52 (2024)

FAQs

How do you keep frittata fluffy? ›

Dairy, like milk or cream, is a crucial component of frittatas. This is the ingredient that gives frittatas their signature creamy, fluffy texture. Without this important addition, frittatas cook up flatter and a bit more dense. Follow this tip: After whisking the eggs together, be sure to whisk in some milk or cream.

How do you know when baked frittata is done? ›

Cook the frittata in the oven just until the centre is no longer wobbly and the edges are golden-brown. If still unsure, place a knife into the centre of the frittata. If raw eggs run out, keep cooking. You want the eggs to be just set as the frittata will keep cooking while it's standing.

Do you flip a frittata? ›

Pre-seasoning the eggs with salt helps them retain moisture during cooking. Cooking the vegetables in batches gives us more control over their texture. Keeping the cheese in large chunks gives us oozy pockets in the frittata. Flipping the frittata ensures a creamy, dense center.

Why did my frittata rise? ›

What Makes a Frittata Rise? Milk or cream is the essential ingredient that will make your frittata rise. Cooked without either milk or cream, the frittata will be flatter and less puffy. Add the milk or cream to the eggs and whisk them together until they are fluffy.

What kind of cheese is best for frittata? ›

For a standard 12-egg frittata, stir in about one cup (shred it first). Want to top the eggs with cheese, too? Shoot for ¼ to ½ cup more. If it's an oozing texture you're after, pick cheeses that have superior melting quality: "This is your cheddar, gruyère, and fontina," says Perry.

What is the difference between an omelet and a frittata? ›

And, unlike omelets, frittata fillings are mixed in with the eggs in the pan rather than folded in the center. To make a frittata, well-beaten eggs are cooked on the stove in a hot skillet, along with the fillings, for a few minutes until the outer edges are set.

What is the frittata ratio to memorize? ›

The Frittata Ratio to Memorize

So how do you make a great frittata every time without always using a recipe? The answer is a ratio. For every six eggs, use 1/4 cup heavy cream, 1 cup cheese, and 2 cups total of vegetables and/or meat.

How to stop frittata sticking? ›

Add olive oil to grease – this will stop frittata from sticking. Add frittata mixture to the pan.

Do you add milk to frittata? ›

Adding a bit of dairy, whether it's cream or thick yogurt, is essential for getting the moisture and creaminess of the frittata just right. For every dozen eggs, use a half cup of dairy. It can be cream, whole milk, sour cream, yogurt, crème fraîche, even cottage cheese.

What kind of pan for frittata? ›

Use a cast-iron skillet.

The best choice for making frittatas, cast iron skillets can safely go from stovetop to oven, and they conduct heat well and evenly. Seasoning a cast-iron pan gives it a non-stick quality, so a well-seasoned skillet will result in the easiest slicing & serving.

Should frittata be brown on top? ›

Watch your Frittata ever so closely as it cooks

One rule of thumb is when the top is golden brown the inside is overdone. You can achieve the golden brown top by shredding cheese on the top of your fully cooked frittata and place it under a broiler for just a few minutes.

What do you serve with frittata? ›

The best side dishes to serve with frittata are mixed green salad, garlic bread, waffles, cinnamon rolls, bagel bites, biscuits, potato rosti, roasted vegetables, fresh fruit salad, grilled asparagus, tomato and mozzarella salad, home fries, and quinoa tabbouleh.

Why did my frittata turn GREY? ›

The green-gray color (and the whiff of sulfur smell that often accompanies it) comes from the reaction of iron in the egg yolk and sulfur in the egg white.

How jiggly should a frittata be? ›

When you pour in your eggs, let the frittata set for a couple of minutes on the stovetop. Then keep an eye on it when it's in the oven, and take it out when it's still a touch jiggly—not quite creme brulee-level jiggly, but when the top is a still a tiny bit shaky, get that frittata out of the oven and serve it warm.

How to keep a frittata from falling? ›

Beat the eggs just enough to blend the whites and yolks. You don't want to beat the eggs too much or you will incorporate too much air into the eggs; this will cause the frittata to poof in the oven and fall into a dense sad frittata after cooling.

What makes frittata spongy? ›

Use the right number of eggs: If you underfill or overfill your skillet, the texture of the frittata may be compromised. Thin frittatas easily overcook; thick ones may cook too long on the outer edges before the inside is set. That leaves you with an eggy, spongy dish.

How do you keep eggs fluffy? ›

  1. Use High quality eggs. There's no better way to get fluffy scrambled eggs than by making your scrambled eggs with a high quality egg, like a Happy Egg! ...
  2. Drop the fork. ...
  3. ADD A DAIRY. ...
  4. Use a non-stick pan. ...
  5. Use low heat. ...
  6. Don't overcook the eggs. ...
  7. Use a rubber spatula. ...
  8. Add a last-minute dairy dollop.

How do I stop my frittata from burning on the bottom? ›

The solution is to partially cook the frittata on the stove. To prevent the bottom from burning on the stovetop, give the frittata a few stirs until you can see some large curds of egg and it starts to turn opaque, but it's still wet enough to flatten off the top.

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