The BEST EVER Stuffed Portobello Mushrooms - The Girl on Bloor (2024)

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By Taylor Stinson | 47 Comments | Posted: | Updated:

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These are the BEST EVER Stuffed Portobello Mushrooms! They’re super flavourful and packed with chicken, breadcrumbs, cheese and red pepper.

The BEST EVER Stuffed Portobello Mushrooms - The Girl on Bloor (1)

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The BEST EVER Stuffed Portobello Mushrooms - The Girl on Bloor (2)

Ingredients and substitutions

  • Olive oil – or another neutral cooking oil of your choice like canola or avocado oil.
  • Portobello mushrooms – cremini mushrooms can be stuffed but they’re a lot smaller, so you’ll be getting bite-sized mushrooms instead of a meal-sized option.
  • Chicken breasts – you could also use leftover cooked chicken or rotisserie chicken.
  • Red pepper – swap out for any veggies of your choice like different color bell peppers, spinach, artichokes, kale, mushrooms, corn and more.
  • Red onion – white or yellow onion can be used but will have a milder flavor.
  • Egg – feel free to leave this out if you don’t have any on hand.
  • Breadcrumbs – panko would also work.
  • Garlic – freshly minced garlic is best but jarred minced garlic will work in a pinch.
  • Salt & pepper – to taste.
  • Fresh parsley – if you don’t have any fresh parsley, dried parsley can be used instead.
  • Cheddar cheese – use any kind of cheese of your choice here like mozzarella cheese or even parmesan cheese.
The BEST EVER Stuffed Portobello Mushrooms - The Girl on Bloor (3)

How to make stuffed portobello mushrooms

Step 1: Cook the chicken.

Bake the chicken in the oven, let it cool then shred or chop it into small pieces.

Step 2: Scrape out the mushrooms.

De-stem and scrape out the portobellos. Reserve the inside gills and throw out the stems.

Step 3: Make the filling.

Add the gills to a large bowl with the chicken, veggies, egg, breadcrumbs, garlic, parsley and half the cheese.

Step 4: Stuff the mushrooms.

Add the mixture to the portobello mushroom caps and top with the remaining cheese.

Step 5: Bake in the oven.

Bake until the mushrooms are cooked through and the cheese is melted.

Step 6: Serve and enjoy!

The BEST EVER Stuffed Portobello Mushrooms - The Girl on Bloor (4)

More stuffing ideas

This stuffed portobello mushroom recipe is super versatile! You can add pretty much any veggie or protein to the filling. Here are some more ideas:

  • Sausage and mushroom stuffing
  • Pizza stuffing
  • Sausage and kale stuffing
  • Taco stuffing
  • Philly cheesesteak stuffing
  • Vegetarian Tex Max stuffing

I would recommend keeping the breadcrumbs, cheese and eggs to maintain the texture, but they're technically optional.

Frequently Asked Questions

Should you remove the gills from portobello mushrooms before cooking?

Yes, you should very gently scrape out the mushroom gills and reserve them for the mushroom stuffing. Gently cut the stem, then start to scrape out the gills with a spoon. Try to be as gentle as possible because you can crack the mushroom cap and you don't want that to happen or the stuffing will spill out.

What do you serve on the side?

You can serve these stuffed portobello mushrooms with a nice green salad with homemade dressing, steamed veggies, garlic parmesan asparagus or brussels sprouts.

Can you make them low-carb or vegan?

The breadcrumbs are optional so you can definitely leave them out and just add your proteins and veggies to make these stuffed portobello mushrooms low carb. I would add a bit of extra meat and cheese if you’re adding in more veggies. If you want to make this recipe vegan, just leave out the meat and cheese – you could even add some cooked rice or quinoa to make it a more substantial meal.

What can you use instead of chicken?

You can swap out the chicken for any other protein of your choice like ground beef, sausage or steak. This recipe is super versatile, so feel free to mix and match with the stuffing!

Can you cook stuffed portobello mushrooms on the grill?

I personally haven't tried making these stuffed mushrooms on the grill, as they might fall apart. That being said, you can definitely give it a shot and try grilling them for 10-15 minutes on medium heat.

The BEST EVER Stuffed Portobello Mushrooms - The Girl on Bloor (5)

Storing and reheating

If you've made these stuffed portobello mushrooms for dinner and have leftovers, they can be stored in the fridge for up to 3 days. When you’re ready to enjoy, microwave them on high for 2 to 3 minutes. I recommend stirring the stuffing gently mid-way through the reheating time just to ensure even heating of the stuffing in the centre.

Can you freeze stuffed portobello mushrooms?

This stuffed portobello mushroom recipe is definitely freezer-friendly! Once the mushrooms have completely cooled, flash freeze them in a single layer on a baking sheet then transfer them to airtight containers or heavy-duty freezer bags. They’ll last in the fridge for up to 6 months, but may start to lose their texture slightly after 2 months. Let them defrost in the fridge overnight then reheat as normal.

The BEST EVER Stuffed Portobello Mushrooms - The Girl on Bloor (6)
The BEST EVER Stuffed Portobello Mushrooms - The Girl on Bloor (7)

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Meal Prep Tools

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  • Freeze this recipe in glass microwave-safe bowls up to 3 months.
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The BEST EVER Stuffed Portobello Mushrooms - The Girl on Bloor (11)

The BEST EVER Stuffed Portobello Mushrooms

These are the BEST EVER Stuffed Portobello Mushrooms! They’re super flavourful and packed with chicken, breadcrumbs, cheese and red pepper.

4.82 from 107 votes

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Servings: 4 servings

Calories: 313kcal

Author: Taylor Stinson

Prep Time: 15 minutes minutes

Cook Time: 30 minutes minutes

Total Time: 40 minutes minutes

Ingredients

  • 1 tbsp olive oil
  • 4 medium-sized portobello mushrooms
  • 2 chicken breasts (or 2 cups leftover cooked chicken)
  • 1/2 red pepper, diced
  • 1/2 red onion, diced
  • 1 egg optional – just acts a binder, but the cheese will do that as well
  • 1/4 cup breadcrumbs
  • 2 cloves garlic, minced
  • 1/2 tsp each salt & pepper
  • 1/4 cup fresh parsley, chopped
  • 1 cup shredded cheddar cheese, divided

Instructions

  • Preheat oven to 400 F. Add olive oil to chicken and season with salt & pepper. Bake for 15 minutes until chicken is just barely cooked through. Let cool then shred or chop into small pieces. Alternatively, cook chicken in a large pot of boiling water for 15 minutes, then shred chicken.

  • While chicken is cooking, de-stem and scrape out the portobellos, reserving inside mushroom gills and disposing of stems.

  • Add mushroom gills to a large bowl and toss with cooked chicken, red pepper, red onion, egg, breadcrumbs, garlic, salt & pepper, parsley and half the cheese. Change oven temperature to 375 F.

  • Add filling to mushroom caps then top with remaining cheese. Bake in oven for 18-20 minutes until mushroom caps are cooked through and cheese is melted. Serve and enjoy!

Video

Notes

Choose mushrooms that have whole, intact caps that feel very firm. They should have a smooth appearance with minimal discoloration or dry patches with clean gills.

Try out more stuffing ideas like sausage and mushroom, pizza or taco stuffing.

Cut down on prep time by cooking and shredding your chicken in advance.

Store the leftovers in the fridge for up to 3 days. Reheat in the microwave for 2-3 minutes.

Flash-freeze the mushrooms then freeze for 2-6 months. Defrost in the fridge then reheat as normal.

Nutrition

Calories: 313kcal (16%)Carbohydrates: 10g (3%)Protein: 35g (70%)Fat: 14g (22%)Saturated Fat: 7g (44%)Cholesterol: 142mg (47%)Sodium: 380mg (17%)Potassium: 831mg (24%)Fiber: 1g (4%)Sugar: 3g (3%)Vitamin A: 840IU (17%)Vitamin C: 21.4mg (26%)Calcium: 234mg (23%)Iron: 1.5mg (8%)

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Created by Taylor Stinson

Hey there, my name's Taylor! I’m the founder of The Girl on Bloor, a food blog where I share healthy meal prep recipes for busy people. I'm a busy city girl living in downtown Toronto on (you guessed it!) Bloor Street. I've got 10 years experience meal prepping, along with a Master's degree in journalism, and you can find my work across the internet featured on publications such as Buzzfeed, HuffPost, Women's Health, Reader's Digest and more. I also run the awesome 5-Day Meal Prep Challenge, which is a free email course and Facebook group where I share my meal planning strategies and easy meal prep tips and recipes. Be sure to check out my free beginner’s guide to meal prep and follow me on Facebook, YouTube and Instagram to get my latest recipes and meal prep tips!

Reader Interactions

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Did you make this recipe or want to share your thoughts? Make sure to leave your review below and tag me on Instagram #thegirlonbloor so I can check it out!

    4.82 from 107 votes (95 ratings without comment)

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    Comments & Reviews

  1. Susan Woods says

    The BEST EVER Stuffed Portobello Mushrooms - The Girl on Bloor (12)
    These were delicious! I didn’t have time to defrost the chicken so I subbed in mini grass fed beef meatballs and it worked well! Next time I’ll try the chicken.

    Reply

    • Taylor Stinson says

      I’m so happy you enjoyed! Great idea for a substitute!

      Reply

  2. Renee Baranek says

    It would have been helpful if you had posted the measurements of all of the ingredients.

    Reply

    • Taylor Stinson says

      They are there in the recipe card. There is a jump to recipe button at the top of the page.

      Reply

  3. Jessica Y. says

    The BEST EVER Stuffed Portobello Mushrooms - The Girl on Bloor (13)
    I mean my 1st most honest reaction to tasting this was “WOW HEAVEN’S HAVING A DANCE PARTY IN MY MOUTH!” LOL It’s absolutely amazing!

    Reply

    • Taylor Stinson says

      What an amazing review, thank you!! So glad you enjoyed 🙂

      Reply

  4. Kevin says

    Where do you use the other half of the olive oil?

    Reply

    • Taylor Stinson says

      That is an error, you use the whole tbsp on the chicken. Sorry for the confusion!

      Reply

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The BEST EVER Stuffed Portobello Mushrooms - The Girl on Bloor (2024)

FAQs

Are portobello mushrooms good or bad for you? ›

They are low in calories and are a good source of 15 different vitamins, minerals and antioxidant phytonutrients including copper, selenium and B vitamins.

Should I rinse portobello mushrooms before cooking? ›

Use a damp paper towel to gently wipe any dirt or debris from the portobello. A damp paper towel should easily clean your mushrooms without the loss of flavor that occurs when mushrooms are cleaned in running water.

Should I remove gills from portobello mushrooms? ›

Mushroom gills are completely edible, but not everyone is jazzed about including them in their dish.

Is it bad to eat too many portobello mushrooms? ›

Gut irritation: Mushrooms are not easy to digest which is why experts do not recommend eating them every day. Across its varieties, binge eating mushrooms can disturb gut health, result in inflammation and digestive distress consequently.

Is portobello mushroom good for high blood pressure? ›

Portobello mushrooms are rich in minerals. Each serving provides 15 percent of the DV for potassium, 16 percent of the DV for phosphorus, 24 percent of the DV for copper and 38 percent of the DV for selenium. Potassium helps with nerve and muscle function and counteracts the effects of sodium on your blood pressure.

Are you supposed to eat the stems of portobello mushrooms? ›

The stems of large portabella, while technically edible, can be woody and fibrous and are usually discarded (or used to flavor stock). Likewise, the dark black gills can be eaten, but they'll turn your food a nasty, murky, scuzzy brown, so it's best to scrape'em out.

How long do portobello mushrooms last in the refrigerator? ›

Keep in mind that even the freshest mushrooms will spoil relatively quickly, so make sure to cook your portobellos soon after purchasing them—ideally within four to seven days. The same goes for sliced portobello mushrooms.

What we should not do before cooking mushroom? ›

This is the big one: Do not salt the mushrooms too early in the cooking process. Salting too early often draws out too much of the inherent moisture or liquid, which can be a bit overwhelming if you're a mushroom newbie making a large batch.

What are the symptoms of portobello mushroom poisoning? ›

Symptoms include severe gastrointestinal upsets such as abdominal pain, nausea, vomiting and diarrhoea. If the person who has eaten the mushroom has collapsed, stopped breathing, is having a fit or is suffering an anaphylactic reaction, immediately ring triple zero (000) for an ambulance.

How to know if portabella mushrooms are bad? ›

It usually won't take a taste test to know whether or not your mushrooms have gone bad. One of the easiest giveaways that your mushrooms are bad is if their texture has changed from firm and plump to sticky and slimy. Similarly, if they are drying out or downright shriveled, it's time to say goodbye.

What is the black thing inside a mushroom? ›

It is black because the mushroom's spores have dissolved into it. If water is leeching out of your mushrooms as you cook them either your pan wasn't hot enough or you are cooking too many at once. Mushrooms should be seared in a very hot pan with a little oil.

What is portobello vs portabella? ›

The name portabella was popularized in the 1980s to sell a then unglamorous mushroom. Because it is harvested later, the portabella can easily reach 5 inches in diameter, and is packed with concentrated flavor. In the matter of portabella versus portobello, both spellings are used.

What is the healthiest mushroom to eat? ›

Some of the mushrooms considered best for human health include chaga, lion's mane, reishi, turkey tail, shiitake, cordyceps and maitake. Often considered vegetables, mushrooms are neither plants nor animals. They belong to a unique kingdom of fungi.

How often should you eat portobello mushrooms? ›

Stick to 10 cups a day and you're fine. You're a little closer to running into problems with your 10 cups when it comes to vitamin D. Taking more than 60,000 International Units (IU) of vitamin D per day can cause toxicity. That's the amount in 24 cups of portobello mushrooms exposed to ultraviolet light.

Are canned mushrooms as healthy as fresh? ›

Fresh mushrooms offer a slight advantage in several nutritional aspects. They have fewer calories, significantly lower sodium, carbohydrates, and sugar compared to canned mushrooms. Additionally, fresh mushrooms are higher in protein, making them a great option for those looking to add protein to their meals.

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