Keto mushroom and cheese frittata

Known as “Italy’s open faced omelet,” frittatas are easy to make and so versatile, you can enjoy them at any meal! Fresh mushrooms and creamy cheese—bellissimo! The perfect complement to the eggs in this scrumptious keto classic. Buon appetite!
Known as “Italy’s open faced omelet,” frittatas are easy to make and so versatile, you can enjoy them at any meal! Fresh mushrooms and creamy cheese—bellissimo! The perfect complement to the eggs in this scrumptious keto classic. Buon appetite!


4 servingservings
  • 1 lb 450 g mushrooms
  • 3 oz. 90 g butter
  • 6 6 scallionscallions
  • 1 tablespoon 1 tablespoon fresh parsley
  • 1 teaspoon 1 teaspoon salt
  • ½ teaspoon ½ teaspoon ground black pepper
  • 10 10 eggeggs
  • 8 oz. 225 g shredded cheese
  • 1 cup 240 ml mayonnaise
  • 4 oz. 110 g leafy greens
  • 4 tablespoons 4 tablespoons olive oil
  • 1 tablespoon 1 tablespoon white wine vinegar
  • ½ teaspoon ½ teaspoon salt
  • ¼ teaspoon ¼ teaspoon ground black pepper


Instructions are for 4 servings. Please modify as needed.

  1. Preheat the oven to 350°F (175°C). First, prepare the vinaigrette and set aside.
  2. Slice the mushrooms anyway you like, small or big—whatever your preference.
  3. Sauté the mushrooms on medium high with most of the butter until golden. Lower the heat. Save some of the butter for greasing the baking dish.
  4. Chop the scallions and mix with the fried mushrooms. Add salt and pepper to taste, and mix in the parsley.
  5. Mix eggs, mayonnaise and cheese in a separate bowl. Salt and pepper to taste.
  6. Add the mushrooms and scallions and pour everything into a well-greased baking dish. Bake for 30–40 minutes or until the frittata turns golden and the eggs are cooked.
  7. Let cool for 5 minutes and serve with leafy greens and the vinaigrette.


Be sure to choose your cheese carefully! Select a cheese that has superior melting quality like cheddar, fontina or gruyere!

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  1. Laura
    Hubby made this, very delicious!
  2. Zoe
    Sorry if I'm being dim, but I've never come across dl measurements before, e.g. 2 2/5 dl mayonnaise in the above recipe - what does it mean and how do you convert it to grams or ml?
    Reply: #3
  3. Johan Eenfeldt
    Hi Zoe,

    1 dl = 100ml, so 2 2/5 dl = 240ml.

    Sorry about the confusion!

    This is being actively developed right now with a number of exciting things coming soon for recipes. But unfortunately these changes might also result in less than optimal measurement choices while we tune it!

  4. Zoe
    Thanks for the clarification, Johan. It's a bit fiddly but the menus are worth it!
  5. Linda
    This is soooooo yummy but my friend went to make it and only wanted for 1 person and it says 2 1/2 eggs ... how do you do you do half an egg lol
  6. April
    This was OK but it was very bland to us. I'd say use Gruyere cheese could improve this dish immensely. I also think basil or some other stronger herb would add flavor. Additionally bacon too could be added for more flavor punch. And Sour Cream tastes better in egg dishes than mayonnaise.
  7. algra
    2856 calories!!! only from one meal!!!?

    how is that going to make me lose weight?

    Reply: #11
  8. Kim
    good substitute for mushrooms?
  9. Jen
    What size pan did you design this for?
  10. Susan
    What can I use instead of mayo?
  11. Susan
    It calculates to 735 calories per serving, not 2865
  12. AmberK
    Had a busy day and had run out of mayo, no time to make any. I had about 3/4 cup of sour cream (to substitute for 1 cup mayo) and it was delicious. My kids loved this, even the one who isn't a fan of mushrooms. So very creamy and cheesy, a lovely consistency. I used mostly cheddar, but didn't have quite enough of that either, so I threw in a few ounces of an Italian mix (mozz, asiago, parm, etc) and I thought the flavor was quite nice. Huge hit with the whole family, so it will definitely go into our regular rotation.
  13. Michael Dickerson
    Hi I'm new to this diet and wanted to know if I can have half heavy cream and half coffe while on the diet?
  14. Adrian
    Hi there !
    I am new on this program , am I must say that is working for the moment.
    186cm, 86kg fit really thanks to those guys
  15. Dorthea
    Hi I'm new and I'm a bit confused.
    I got a 1/2 thyroid gland, and on no medecin and I've always been told to stay away from dairy but on the woe it is encouraged, am I right or wrong?
    Kind regards
  16. Stacie
    This was way more than 4 servings because I put it in a cake pan. Very good but I would def add more ingredients for texture and flavor next time and maybe just make 1/2 if this. 1/2 of this fed me about 6 times
  17. diane
    This was delicious

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