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Slow Cooker Eggs in Portobello Mushrooms + VIDEO

Slow cooker eggs in portobello mushrooms is an easy recipe that can be eaten all day. Crack some eggs into mushrooms in this low-carb, paleo, and whole30 slow cooker recipe that can also be made in the Instant Pot.

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Updated 2020

I get told all the time I don’t post enough vegetarian recipes. So for all my vegetarians out there, this one is for you.  If this looks familiar, it’s because I pretty much took my Slow Cooker Shakshuka recipe & added portobello mushrooms.

4 large portobello mushrooms cleaned with gills removed on a cutting board

What Are Portobello Mushrooms

If you’re familiar with cremini mushrooms then you’re familiar with portobello mushrooms because portobellos are larger, mature versions of creminis. They do taste different though. Because portobellos are grown for a longer period of time, they’re a little dryer than creminis and have a bit of a stronger mushroom flavor. Their thick, meat-like texture makes them a popular vegetarian replacement for meat in burgers and sandwiches. Portobellos are larger than the average edible mushroom; they have a large cap with dark gills. Their large size makes them popular for stuffing.

tomatoes, bell peppers, onions, and seasonings in the slow cooker

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Preparing The Portobello Mushrooms

Prepping portobello mushrooms is easy & quick. First you will need to clean the mushrooms by wiping the caps with a damp paper towel. Next, cut off the stem & remove the gills. The stem should pull off easily, if not you can cut it off. To remove the gills, hold the mushroom and scoop out the gills with a spoon. The gills are actually edible but we’re removing them here so there’s room for the eggs.

4 large portobello mushrooms in the slow cooker on top of tomato sauce

before

Serve This All Day

Are you supposed to serve this this for breakfast, lunch, or dinner? This can be served for all three.  I’m going to guess most people will serve this for breakfast or brunch because of the eggs. I think portobello mushrooms are a bit hearty so I usually eat this for dinner.

cooked portobello mushrooms in the slow cooker

Other egg recipes you might enjoy:

Denver Omelette Casserole

Avocado Egg Casserole

Sausage, Spinach & Cheese Breakfast Casserole

Egg White Vegetable Frittata 

raw eggs added on top of cooked portobello mushrooms in the slow cooker

How Many Eggs To Use

I added one egg per mushroom cap but you can up to two eggs per mushroom. It all depends on how big your appetite is. Or how many eggs you have. How long you cook your eggs is up to you. The eggs will cook fairly fast in a hot slow cooker so you might want to see how done it is after 5 minutes and go from there. I live in a split household: my husband like a runny egg, I like mine hard-boiled. I take his out of the slow cooker after 10 minutes but

close up of cooked eggs added on top of cooked portobello mushrooms in the slow cooke

The mushrooms cook in the tomato-veggie sauce first with the eggs added last. There might be a some excess liquid in the mushroom cap when you go to add the egg. This is okay. You can pour the liquid in the tomato sauce or add the egg on top of it. Depending on your appetite this could serve 2, 3 or 4 people.

cooked eggs added on top of cooked portobello mushrooms in the slow cooker

 

How do you like your eggs? Do you like a runny egg? Hard-boiled?

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close up of cooked eggs added on top of cooked portobello mushrooms in the slow cooke

Slow Cooker Eggs in Portobello Mushrooms

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5 from 1 review

  • Total Time: 2 hours 10 mins
  • Yield: 2-4 1x

Ingredients

Units Scale
  • 4 large portobello mushroom caps
  • 4 large eggs
  • 28 ounces diced or crushed tomatoes
  • 1 bell pepper, diced
  • 1/3 cup onion, diced
  • 1 garlic clove, minced
  • 1 tsp paprika
  • 1 tsp salt
  • 1/2 tsp pepper
  • 1/2 tsp thyme
  • Handful fresh herbs for garnish (optional)

Instructions

Prepare The Mushrooms

  1. Wipe the mushrooms clean with a damp paper towel. Remove the stem and using a spoon, remove the gills but scraping gently.
  2. Season with salt & pepper.

Slow Cooker

  1. Add the tomatoes, bell pepper, onion, garlic, paprika, salt, pepper, and thyme to the slow cooker. Stir to mix well.
  2. Add the prepared mushrooms, hollow side UP.
  3. Cook HIGH 2-3 hours or LOW 4-6 or until mushrooms are soft.
  4. Crack egg(s) into each mushroom cap. Season with salt & pepper. Cook an additional 5-10 minutes on HIGH or until the egg is cooked to your liking.
  5. Top with fresh herbs if using.

Instant Pot

  1. Turn on the IP and select sauté. Once hot add oil, onion, and bell pepper. Cook 3-5 minutes or until vegetables are soft. Add garlic and cook an additional minute.  Turn off the pressure cooker.
  2. Add salt, pepper, thyme, paprika & crushed or diced tomatoes. Stir to mix well.
  3. Dig 4 small holes in the tomato sauce. Add the prepared mushrooms, hollow side UP. It’s okay if they overlap, they’ll reduce in size while they cook.
  4. Close lid and seal valve. Set high pressure and cook for 10 minutes. Quick release pressure when done.
  5. Crack one egg into each portobello mushroom. Season each egg with a pinch of salt & pepper.
  6. Close lid and seal valve. Set high pressure and cook for 1 minute. Quick release pressure when done.
  • Author: Shannon Epstein
  • Prep Time: 10 mins
  • Cook Time: 2 hours

My 6-quart slow cooker fits up to 4 large portobello caps or 8 baby portobellos. Keep in mind that the mushrooms will shrink down while they cook.

runny egg in portobello mushrooms on a plate

 

This post also contains affiliate links, which means I receive money if you make a purchase using one of the links. You can view my disclosure policy here: https://fitslowcookerqueen.com/about/disclosure-policy/.

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Slow Cooker Eggs in Portobello Mushrooms + VIDEOSlow Cooker Eggs in Portobello Mushrooms + VIDEO
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Keith

Sunday 24th of July 2022

This recipe is very quick and easy, delicious . The second time we made it we took it up a notch and added browned ground turkey, plus 15oz crushed tomatoes, it was very satisfying.

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whodoido

Friday 16th of February 2018

I'm not a vegetarian but I would definitely make this either for brunch or dinner for one of my fast days! A hearty dish and looks filling too! Love my eggs runny!

Healy Eats Real

Thursday 15th of February 2018

This is one of those dishes you would use to impress someone! :D I love how it looks! :)