Grilled Sausage Portobello Mushroom Pizza is impossible not to love! It’s absolutely scrumptious and also happens to be gluten-free and low-carb. This is obviously what you have to cook next and it will be a huge hit! Is it really a pizza? Okay, let’s be honest, it’s a pizza of sorts. The “crust” is an entire portobello mushroom cap!
Using Portobello Mushrooms as a Pizza Crust
This amazing creation has so many things going for it . . .
- First and foremost, it’s delicious.
- You can use any toppings you like, and the possibilities are endless.
- It happens to be gluten-free and low-carb — if that matters to you or perhaps a guest. ๐
- Portobello Pizzas make for an awesome personal-sized meal. Add a salad and call it dinner.
- And they can also be sliced for a fabulous appetizer for sharing.
How to Clean Portobello Mushrooms
- Dampen a soft paper towel or kitchen towel, and gently wipe the rounded top of the mushroom. Mushrooms absorb water very easily, so it’s best not to wash them under running water. (When the mushrooms are super dirty, i.e., with clumps of dirt, this is reason to lightly run water over directly over them, and then wipe them off.)
- Remove the stems. You won’t risk breaking the mushroom if you gently wiggle them back and forth to pull them off. (You can wash and save the stems for a making vegetable stock.)
- Use a spoon to scrape off the gills from the underside of the mushroom. (This is not imperative — however, I always do it when I’m grilling or sautรฉing them over high heat because they become bitter.)
How to Make Grilled Sausage Portobello Mushroom Pizzas
- Caramelize onions in clarified butter.
- Sautรฉ the sausage in the same pot where you cooked the onions.
- Clean and grill the mushrooms
- Add the toppings in the following order: basil, mozzarella, caramelized onions, tomatoes, sausage.
- Bake.
- Add basil garnish.
(This is just to give you an idea — much more detailed instructions are below.)
More Ideas for Porobello Pizza Toppings
You can use absolutely any toppings you like. Here are a few delicious ideas:
- Gruyรจre and spinach.
- Manchego and chorizo.
- Asiago, caramelized onion and pecan.
- Mozzarella, roasted garlic and tomato.
- Caprese with fresh mozzarella, basil and tomatoes.
- Mozzarella, Feta, sun-dried tomato and Kalamata olives.
Tips
- The flavor the butter adds to the caramelized onions is dreamy, but if you want it to be a bit lighter, feel free to use olive oil. They will still be tasty.
- To save time, you can quickly sautรฉ the onions. They will only be slightly caramelized, less soft and sweet — but again, still tasty. ๐
- The ingredient measurements might vary slightly depending on the size of your mushrooms.
- You don’t have to line the baking sheet with foil but it makes for easier clean-up.
Here are a few more delicious portobello mushroom recipes:
Asian Marinated Grilled Portobello Mushrooms
Spinach Feta Quiche in Portobello Caps
Creamy Portobello Mushrrom and Mascarpone Pasta from Foodtasia

This Portobello Mushroom Pizza is impossible not to love! It's absolutely scrumptious and also happens to be gluten-free and low-carb. This is obviously what you have to cook next and it will be a huge hit!
- 3 cups yellow onion, thinly sliced (about 1 large onion)
- 4 tablespoons unsalted butter
- 4 large portobello mushrooms (approximately 5-inch diameter)
- olive oil for the grill
- about 2 dozen basil leaves, washed and dried
- 3/4 cup mozzarella cheese, grated
- 3 small tomatoes, washed and dried, thinly sliced (you will need approximately 12 slices)
- 1 (4-ounce) raw sweet Italian sausage
- salt and freshly ground black pepper
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Add the butter to a large pot and turn the heat to low. Once the butter has melted completely, use a spoon to remove the milk solids (white foam) from the surface and discard. Then turn the heat to medium-high and add the onions. Stirring often, sautรฉ until they're a deep golden color and very soft. This should take about 25 minutes. About halfway through the cooking time, reduce the heat to medium-low. Season to taste with salt and pepper. (Here's How to Season to Taste.) Remove the onions from the pot and add them to a small bowl. What was 3 cups will now be about 1/2 cup. Set aside.
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Squeeze the sausage out of its casing into the same pot, break it apart and sautรฉ until it's cooked through. Set aside.
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Preheat the oven to 375ยฐF, and line a baking sheet with foil. Set aside.
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Use a damp paper towel or kitchen towel to wipe the mushroom caps clean. Remove the stems from the mushrooms by wiggling them gently.ย Then use a small spoon to scrape the gills off the underside of the mushrooms.
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Over a high flame, preheat a stove-top grill. (See notes!) On a large plate, drizzle the mushrooms with olive oil on both sides and season generously with salt and pepper. Place them on the preheated grill โ if you donโt hear a sizzle, take them off until itโs hot enough that you do.ย They will not caramelize properly unless it's hot enough. Grill them until they're nicely browned and tender, 3 or 4 minutes per side. When they're done, place them on the foiled covered baking sheet, round side down.
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Place enough basil leaves on each mushroom to cover the surface. Divide the cheese evenly among them, sprinkling it directly on top of the basil. Then dividing them equally, add the caramelized onions, followed by the tomato slices and sausage.
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Place the "pizzas" in the preheated 375ยฐF oven and bake until the the cheese is completely melted, about 5 minutes.
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Finely chop the remaining basil and sprinkle in on top of each one and serve.
If you don't have a stove-top grill, you can sautรฉ the mushrooms in a skillet following the same instructions. (A cast iron skillet is ideal.)
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angiesrecipes says
This is WONDERFUL for when you are craving something comforting but don’t want to damage your diet way too much. Yummy and healthy recipes are way to go!
valentina says
Thanks so much, Angie. I love yummy and healthy too. ๐ ~ Valentina
2pots2cook says
Absolutely beautiful and creative idea to skip flour, any kind, for a change; not that we are limited but this is so great and healthy to have for easy lunch or appetizer ! Thank you and enjoy your weekend !
valentina says
Thank you! I hope you have a lovely weekend, too. ๐ ~ Valentina
Kim Lange says
Oh this looks like a winner! LOVE mushrooms and love the spin you put on them, because who doesn’t love pizza? You’ve made it low-carb and healthy! Pinning! xo
valentina says
Much appreciated, Kim! ๐ ~ Valentina
Eha says
*big smile* Have stuffed portobellos for decades but never had the nouse to call them ‘pizza’ ! They can be made very moreish and thus methinks may take on any name !! Actually I usually begin with the mushrooms and then have a look in the fridge at which combination of available ingredients would offer the most flavour . . . instead of Italianate: Szechwan, Korean and Keralan flavour combinations may also do wonders for using up stuff in the fridge . . .
valentina says
Thank you for the smile, Eha. Love that the mushrooms inspire you as you look through the fridge. ๐ ~ Valentina
Jeff the Chef says
I love portobellos. Never thought of using them for pizza crusts, but what a great idea!
valentina says
Many thanks, Jeff! ~Valentina
David Scott Allen says
Love this! And I donโt even have to edit out the garlic! ๐ I like this especially because they make such nice, flavorful, and tidy single servings. Happy weekend!
valentina says
And a very happy weekend to you too, David! Yes, especially for you — sans garlic. ~Valentina
Kathy @ Beyond the Chicken Coop says
I love this idea! This has two of my favorite things – stuffed mushrooms and pizza! It doesn’t get much better than the combination of the two.
valentina says
Two of my favorites, too, Cathy. Thanks for visiting and checking it out. Enjoy. ~Valentina
Nancy says
SOOOO good! And I’m firmly in the camp of “anything tastes better with caramelized onions!” Definitely adding to the fall playlist!
valentina says
Thanks, Nancy! Excited to be on you “playlist!” Love it. ๐ ~Valentina
David @ Spiced says
What a fun idea to use mushrooms as a “pizza crust”! The flavors here sound amazing…and the Gruyรจre and spinach idea sounds like it’s right up my alley, too!
valentina says
Enjoy, David. Thanks so much! ๐ ~Valentina
Dawn - Girl Heart Food says
Because I’m a HUGE mushroom fan…and, of course, pizza fan…these are right up my alley! They would be delicious for a weekday dinner or special Friday night meal, alike ๐ Can’t wait to try! Have an awesome week, Valentina!
valentina says
Thank you, Dawn. Oooh, I like the idea for a Friday night meal. ๐ ~Valentina
Gerlinde @ sunnycovechef says
Valentina, this stuffed portobello mushrooms looks fantastic, my kind of food because I am supposed to cut down on the carbs.
valentina says
Many thanks, Gerlinde. It’s fun to find delicious ways to change our diets. ๐ ~Valentina
Marissa says
Loving this lightened up version of pizza! Sending this to my father in law too – he’s crazy for portobello mushrooms and this will be right up his alley!
valentina says
Perfect and thanks so much, Marissa!:-) ~Valentina
Colette says
Who needs the damn crust? This is brilliant!
valentina says
Ha! I’m with you on the crust. Thank you, my friend. ๐ ~Valentina
Kelly | Foodtasia says
Valentina, this looks SO GOOD! I love portobellos and I love pizza – what a wonderful combination! Your toppings look amazing!
valentina says
Thanks so much, Kelly. Enjoy! ๐ ~Valentina