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Kalyn's Kitchen

Grilled Portobello Mushrooms Stuffed with Sausage, Spinach, and Cheese (Video)

Grilled Portobello Mushrooms Stuffed with Sausage, Spinach, and Cheese are delicious for a low-carb meal! Use Meatless Monday to find more recipes like this one.

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Grilled Portobello Mushrooms Stuffed with Sausage, Spinach, and Cheese!

Portobello mushrooms are something I haven’t cooked with nearly often enough, and they’re a wonderfully healthy ingredient, particularly popular with people who are looking for something besides meat to cook on the grill. Grilled Portobello Mushrooms Stuffed with Sausage, Spinach, and Cheese isn’t a vegetarian recipe since the mushrooms are stuffed with spicy Italian sausage, but I think the idea could easily be adapted to a vegetarian stuffed mushroom, maybe even replacing the sausage with diced portobellos. But if you’re an Italian Sausage fan, you’ll love this recipe!

The idea for stuffing grilled portobello mushrooms with sausage came from Bobby Flay’s Grill It.  I’m a fan of Bobby Flay and I like the creative grilling ideas in this book, but on this recipe, there are confusing directions and omissions which should have been caught in editing. Maybe it’s just the school teacher in me that makes me mention it, because overall I love the book, which already has lots of pages flagged with post-its, and this recipe was really delicious. (This cookbook was sent to me by the publisher back in 2008 (when I still accepted books), but I never write about a cookbook unless I would actually buy it myself.)

Grilled Portobello Mushrooms Stuffed with Sausage, Spinach, and Cheese found on KalynsKitchen.com

Start by cooking pork or turkey Italian Sausage until it’s well browned. Remove sausage, saute chopped onion, then mix sausage back into the onions. Add tomato sauce and red pepper flakes to onion/sausage mixture and cook a few minutes while you chop the spinach. Then add chopped spinach, which will look like a lot at first. After a few minutes the spinach has cooked down. Turn off heat and stir in chopped chopped basil and parsley.

The book didn’t mention removing the brown gills inside the portobella mushrooms, but I scraped them out with a spoon (partly to give more room for the stuffing!) Then brush both sides of the mushrooms with olive oil, put mushrooms on the grill inside facing down and cook about 4 minutes before you stuff them. Bobby Flay’s version of this used fresh mozzarella with tomatoes on top, and it looks delicious. There are no garden tomatoes here yet, and I substituted grated mozzarella which is a bit more widely available. The stuffed mushrooms cook on the grill for about 5 minutes, or until cheese is melted and starting to brown, mushroom is cooked through, and stuffing is hot.

Grilled Portobello Mushrooms Stuffed with Sausage, Spinach, and Cheese found on KalynsKitchen.com

More Mushrooms on the Grill:

Super Easy Grilled Mushrooms ~ Kalyn’s Kitchen
Grilled Portobello Mushrooms from A Veggie Venture
Grilled Halloumi Cheese Skewers with Mushrooms and Sweet Onions from Kalyn’s Kitchen
Grilled Portobello Caps from The Well Seasoned Cook

Grilled Portobello Mushrooms Stuffed with Sausage, Spinach, and Cheese

Grilled Portobello Mushrooms Stuffed with Sausage, Spinach, and Cheese make a complete meal!


  • 4 large Portobello mushrooms (get the biggest ones you can find)
  • 12 oz. mild or hot Italian sausage (use turkey Italian sausage for South Beach Diet or pork Italian sausage for low-carb)
  • 1-2 T olive oil (for browning sausage and onions and brushing on mushrooms before grilling)
  • 1 small onion, finely chopped
  • 1 tsp. minced fresh garlic (or use chopped garlic from a jar)
  • 1/2 cup tomato sauce (see notes)
  • pinch red pepper flakes (optional)
  • 8 oz. coarsely chopped spinach leaves
  • 2 T chopped fresh basil (probably optional, but recommended)
  • 2 T chopped fresh parsley (probably optional, but recommended)
  • 1/2 cup grated mozzarella, plus 1/2 cup for sprinkling on top


  1. Preheat gas or charcoal grill to high heat.
  2. Heat a small amount of olive oil in heavy frying pan.
  3. Then crumble Italian sausage into pan and cook about 5 minutes, breaking apart with back of the turner as it cooks.
  4. When sausage is well-browned, remove to bowl.
  5. If needed, add a bit more olive oil, then saute onions until they’re starting to soften, about 2 minutes.
  6. Add garlic and continue cooking until onions are starting to brown, a few minutes more.
  7. Add Italian sausage back into pan, then add red pepper flakes and tomato sauce and simmer 2-3 minutes while you chop the spinach.
  8. Add chopped spinach and let it wilt and cook down, stirring so it’s evenly distributed in the sausage/onion mixture.
  9. Turn off heat and stir in 1/2 cup mozzarella, chopped basil and parsley.
  10.  Remove stems from mushrooms caps, being careful not to break them.
  11.  Scrape out brown gills from inside mushrooms if desired, then brush both sides of mushrooms with olive oil.
  12.  Put mushrooms on grill, inside facing down, and cook about 4 minutes, until mushroom is slightly browned and starting to soften.
  13.  Remove mushrooms from the grill. (I put them on a wooden cutting board.)
  14.  Carefully stuff the inside of each mushroom with sausage/spinach/cheese mixture, then top each mushroom with about 2 T grated mozzarella.
  15.  Carefully put mushrooms back on grill, stuffing facing up of course!
  16.  Cover grill and cook about 5 minutes, checking often and removing from grill when mushrooms are cooked through, and cheese is melted and starting to brown, and stuffing mixture is hot.
  17.  Serve immediately.


I used garden tomato sauce from my freezer for this recipe. If you open a can, just freeze the rest.

Recipe adapted from Bobby Flay’s Grill It.

All images and text ©

Low-Carb Diet / Low-Glycemic Diet / South Beach Diet Suggestions:
I changed a few things in this recipe for Grilled Portobello Mushrooms Stuffed with Sausage to make it suitable for any phase of the South Beach Diet, and ate this as a main course with a simple green salad. Everything in this recipe is a good low-carb food choice, so this should work for most low-carb eating plans.

Find More Recipes Like This One:
Use the Recipes by Diet Type photo index pages to find more recipes suitable for a specific eating plan. You might also like to Follow Kalyn’s Kitchen on Pinterest to see all the good recipes I’m sharing there.

Nutritional Information?
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Grilled Portobello Mushrooms Stuffed with Sausage, Spinach, and Cheese found on KalynsKitchen.com

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    57 Comments on “Grilled Portobello Mushrooms Stuffed with Sausage, Spinach, and Cheese (Video)”

  1. Pingback: 22 Low Carb Keto Mushroom Recipes - My Productive Backyard

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  4. Soooo, bout to make this tonight, but sadly my grill is out of propane & can't get more today….plan to do in my toaster oven in the broiler… Do you think the cooking times would be the same?

  5. Outstanding!!! We made this tonight and decided it should be a staple in our house. We used what we had on hand, which is red wine, tomato paste, and Gouda. I am excited to eat this again. Thanks for sharing!

  6. Jeff, thanks for sharing that. Very interesting way to use jicama!

  7. I couldn't find the post on your FB account so I'm writing this here. I wanted to do them meat free so I substituted Jicama for the ground meat. I steam the Jicama whole in the pressure cooker for 30 minutes. Let it cool and then shred. All else is the same. I also used a Vidalia Onion. I added a tad more hot flakes and hot sauce to balance out the sweetness. It's a slightly different consistency then w the meat. But a GREAT meat alternative.


  8. I used a gas grill. I don't think they're covered long enough for the charcoal to go out; most grills are not air tight. But leave the lid off if you prefer.

  9. which type of grill did you use? I ask because you said to cover at the end… Charcoal gets cooler when covered because the fire starts to die, but propane gets hotter when covered because it has a supply of gas coming in and you're trapping the heat.

  10. I actually did these in the oven. The only warning I will give is make the heat low about 250*F or they will flatten out like pancakes and shrivel. I also used frozen spinach with great results. I was lazy after a 10 hour work day. Great recipe I will use it again : D

  11. Hello Kalyn! These stuffed mushrooms sound delicious! I have never tried making stuffed mushrooms before, but just might try them now! Thank You & Cheers!

  12. Great idea; I would love this with kale!

  13. Amazing amount of flavor… Fantastic! I substituted baby kale for the spinach. Either would work well.

  14. I had four portabello mushroom caps, some chicken sausage in assorted flavors, and went looking for a low-carb recipe. Knew I would find one here – thanks so much, Kalyn.

    I hope your arm is better soon.