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Grilled Sausage Portobello Mushroom Pizza

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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!Grilled Sausage Portobello Mushroom Pizza on a white plate with basil leaves Is it really a pizza? Okay, let’s be honest, it’s a pizza of sorts. The “crust” is an entire portobello mushroom cap!

four portobellos on cutting board

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. 😉 
  • 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.

portobello mushroom with a spoon showing how to remove gills

How to Clean Portobello Mushrooms

  1. 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.)
  2. 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.)
  3. 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 sautéing them over high heat because they become bitter.)

Caramelized onions in a pot

How to Make Grilled Sausage Portobello Mushroom Pizzas

  1. Caramelize onions in clarified butter.
  2. Sauté the sausage in the same pot where you cooked the onions.
  3. Clean and grill the mushrooms
  4. Add the toppings in the following order: basil, mozzarella, caramelized onions, tomatoes, sausage.
  5. Bake.
  6. Add basil garnish.

(This is just to give you an idea — much more detailed instructions are below.)

Portobellos with cheese and onion in black pan

More Ideas for Porobello Pizza Toppings

You can use absolutely any toppings you like. Here are a few delicious ideas:

  • Gruyère 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.

Close up of Grilled Sausage Portobello Mushroom Pizza with basil leaves

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 sauté the onions. They will only be slightly caramelized, less soft and sweet — but again, still tasty. 🙂
  • 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

Sausage Portobello Pizza on a white plate with basil leaves

Grilled Sausage Portobello Mushroom Pizza

Valentina K. Wein
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!
5 from 10 votes
Print Recipe
Prep Time 15 mins
Cook Time 35 mins
Total Time 50 mins
Course Appetizer, Dinner
Cuisine Italian
Servings 4
Calories 292 kcal

Ingredients
  

  • 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

Instructions
 

  • 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, sauté 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.
  • Squeeze the sausage out of its casing into the same pot, break it apart and sauté until it's cooked through. Set aside.
  • Preheat the oven to 375°F, and line a baking sheet with foil. Set aside.
  • Use a damp paper towel or kitchen towel to wipe the mushroom caps clean. Remove the stems from the mushrooms by wiggling them gently. Then use a small spoon to scrape the gills off the underside of the mushrooms.
  • 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 — if you don’t hear a sizzle, take them off until it’s hot enough that you do. 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.
  • 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.
  • Place the "pizzas" in the preheated 375°F oven and bake until the the cheese is completely melted, about 5 minutes.
  • Finely chop the remaining basil and sprinkle in on top of each one and serve.

Notes

If you don't have a stove-top grill, you can sauté the mushrooms in a skillet following the same instructions. (A cast iron skillet is ideal.)
Keywords gluten-free pizza recipes, appetizers for sharing
Have you tried this recipe?I'd love to see it on Instagram! Tag me at @cookingontheweekends or leave a comment & rating below.

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Comments

  2. 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 !

    Reply

  3. 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

    Reply

  4. 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 . . .

    Reply

  10. 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 🙂 Can’t wait to try! Have an awesome week, Valentina!

    Reply

  12. 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!

    Reply

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