This frittata is full of flavor!
If you’ve yet to try our mouth-watering Spinach and Mozzarella Frittata, you don’t know what you’re missing! This slow cooker recipe creates a savory and filling breakfast that will have you coming back for more.
A frittata is a great alternative to a traditional omelet or scrambled eggs. It is easier to make, because there is no flipping or hovering over the stove. This slow cooker spinach and mozzarella frittata is made even easier because you toss the ingredients into the slow cooker and leave it to bake on its own. Like so many of the healthy slow cooker recipes featured on our site, this dish is easy, convenient, and filled with delicious, healthy ingredients. Whether you are searching for a breakfast or brunch option, or you need a dish to share for a special occasion, this is it.
Spinach and Mozzarella Frittata can be served hot or cold and goes perfectly with a garden fresh salad. We love to experiment by added sauteed mushrooms and goat cheese. What’s your favorite frittata add-in?
Slow Cooker Spinach and Mozzarella Frittata
- 1 tablespoon extra virgin olive oil
- 1/2 cup onion diced
- 1 cup 2% mozzarella cheese shredded, divided
- 3 eggs
- 3 egg whites
- 2 tablespoons 1% milk
- 1/4 teaspoon black pepper
- 1/4 teaspoon white pepper
- 1 cup baby spinach chopped, with stems removed, packed
- 1 roma tomato diced
- salt to taste
- In a small skillet, add oil and sauté onion on medium heat until tender, about 5 minutes.
- Lightly spray the inside of the slow cooker with nonstick cooking spray. We like to make our own by filling this reusable cooking spray bottle with olive oil or canola oil.
- In a large bowl, combine sautéed onion, 3/4 cup mozzarella cheese, and remaining ingredients; whisk to combine, and pour into slow cooker. Sprinkle remaining 1/4 cup cheese on top of egg mixture.
- Cover, and cook on LOW for 1–1 1/2 hours, or until eggs are set and a knife inserted in the center comes out clean.
Have you made this recipe?
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Did you love our Spinach and Mozzarella Frittata? Do you have a favorite Skinny Ms. recipe? We’d love to hear about it. Tell us what you think in the comments section below.
Definitely want to try this!
Sounds delish!!! However I am thinking about using rotel tomatoes instead of roma. Give it a lil' kick!! and serve it for supper instead of breakfast!!! Thanks for the great ideas!!!!!! :))
Just tried it. By far the best frittata ever!
Just tried it. By far the best frittata ever!
SUCH A GREAT FRITTATA RECIPE. EASY TO MAKE AND MY 3 YEAR OLD LOVED IT. WHICH MAKES ME HAPPY!! 🙂
did it take longer for anyone to cook????? it has been 1 1/2 hours and mine is still eggy in the middle….putting it in the oven to finish cooking….but smells yummy
Tiffany, How did it turn out?
I added turkey sausage to this recipe and it was great.
This is for supper tonight! Yay!
Amanda, Great! Love frittatas for supper.
This is a delicious frittata…it is a fave… We have tweaked it sometimes when I don't have all the ingredients!
Wondering how these are as leftovers? With just my husband and I it's bound to happen. Thanks for the info
Never had leftovers. To be honest, I'm not big on leftover egg recipes…always best fresh out of the slow cooker. Let us know if you try it and what you think.
This is my favorite recipe from here so far. As previously mentioned, I have found it takes a little longer to cook than specified in the recipe. Usually about an hour and 45 minutes.
One of my favorites for breakfast. I make this every other week!
If I double this recipe for a group, how much longer will it need to set?
Deb, 2 – 2 1/2 hours…check after 2.
Does it matter what size slow cooker to use?
Leah, 4 – 6 quart.
Looks amazing! Can I use all whole eggs instead of 3 whole and 3 whites? Will it work out? Also, is it okay if I use my preferred veggies and cheese and add meat? Thanks!
Tiffany, Sure, 3 whole eggs will work. Use any veggies you like! 🙂
Thanks for the recipe…Going to try it soon..
Can you use egg subsitutes in place of eggs in this ?
Lynn, Yes…that should work.
Anyone bake this in a pyrex dish instead of using a slow cooker?? Afraid it won't come out easily
Fran, A pyrex dish should work. Be sure to spray the inside with a non-stick cooking spray before adding the egg mixture.
What size slow cooker did you use? I only have a 5 quart, and that seems too large.
Lori, I actually used a 6 quart…so yours will be fine.
Wondering if you can double everything for a larger group and if so how would that impact the cooking time?
Shana, Yes you can double the recipe. Include 1-2 additional hours of cooking time.
In the recipe description is says your recipe combines the flavor of garlic, but the recipe doesn't call for garlic?
Hi Alexis, That should been onion. Just updated. Thanks! 🙂
taking way longer … whats v diff if i set it on high?
TB & BB, If you set it on high usually you can minus 2 to 3 hours from the cook time.
Can you cook this on medium to speed up the cooking process?
Iva, Yes you can.
I'm confused. Directions are for cooking this in a slow cooker, but the photo shows it in an iron skillet. I'd love to try this recipe, but don't have time for a slow cooker for a morning meal. So has anyone tried it on the stove or in the stove?
Betsy, You can cook this in the stove. After sautéing the onions, add the rest of the ingredients to the skillet, cover with foil, and heat in the oven at 350 for about 20 minutes to 1/2 hour.
Can I subsitute the milk for water?
Kristin, Yes you can.
did anyone make it with frozen spinach?
This is a great recipe! My husband loves it and so do I. One time I forgot to put the milk in it and it didn't hurt it a bit, so now the only thing I do different is to not add the milk. Thank you for such a delicious and easy recipe. 🙂
I’m currently dairy free – will the consistency be altered if I leave out the cheese? Will I need more liquid?
Becky, I would increase the milk by another 2 tablespoons.
How do you get it out of the crockpot looking so pretty????
Lissa, Very carefully! When we photograph food, it requires a lot of extra patience. 🙂
I made this today…
For the egg whites, I used 3/4 cup of EggBeaters (Southwestern Style).
It gives the dish a nice bit of zip.
I set the timer for 2 hours and the frittata set quite nicely.
Very simple to make and will be making this again.
What is the advantage of doing this in a slow cooker?
It would seem that pouring the egg mixture into the saute pan after cooking the onions and then cooking at medium heat until the eggs set — like a regular frittata — would give the same, maybe better result faster and with one fewer pot to clean. (Finish it under a broiler, perhaps, to give the mozzerella toping a toast.)
Michael, Sure, using a saute pan works fine too.
I don’t know about your slow cooker but mine (original Crock-Pot) never browns on the bottom, as shown in your photo.
Phil, One of our favorite slow cookers does brown. There are other brands that do as well.
Hi, can this be done in the instant pot? Do you know what settings and time it would be?
Hi Kristie, this recipe is not the best for an Instant Pot.