We have low carb pizza night at least once a week at our house. It never gets boring, because first of all… pizza!! And second, we switch it up a lot! The classic keto fathead pizza crust is still a family fave, but there’s also cauliflower pizza crust, pizza bowls, eggplant pizzas, and even cauliflower pizza casserole. And, these portobello pizzas are part of the rotation as one of my favorite keto stuffed mushrooms recipes.
Ingredients You’ll Need
Here I explain the best ingredients for pizza stuffed portobello mushrooms, what each one does in the recipe, and substitution options. For measurements, see the recipe card below.
Olive Oil Spray – Use a spray to get an even and light coating of olive oil on the baking sheet and the mushrooms. If you don’t have it, you can just drizzle or brush on olive oil instead. Portobello Mushrooms – Choose large portobello mushroom caps that are more concave and have taller sides work best to hold the toppings. Sauce – I used marinara sauce here, but pizza sauce is also a great choice. Buy store-bought (I look for versions without added sugars like this one), or make your own sugar-free marinara sauce or keto pizza sauce. Mozzarella Cheese – Use shredded for convenience or shred your own. Fresh mozzarella is also fine, but will release more moisture. Pepperoni – I love classic pepperoni pizza, but you can also try some of the other topping ideas below.
How To Make Portobello Pizza
This section shows how to make portobello pizza with step-by-step photos and details about the technique, to help you visualize it. For full instructions, including amounts and temperatures, see the recipe card below.
Topping Variations
Wondering about what to put on your portobello mushroom cap pizza? Try some of these topping ideas: Doing this helps to get rid of the extra moisture before adding toppings, but I often skip this step for less work. If you do roast them first, drain, then add toppings and bake again. If you skip this step, know that they can release a lot of water, but you can just drain the extra liquid from the pan afterward instead. For the best texture and appearance, use these tips!
Use a thick sauce. A thin sauce will make the mushroom more watery. Spread sauce carefully. Don’t put the sauce all the way to the edge of the mushroom cap, as it can run off while cooking. Choose the best mushroom shape. Look for mushroom caps that are concave so that they hold the fillings in better. If yours are very flat, it may be better to roast the mushrooms with olive oil for 15 minutes first, then pat any excess moisture with paper towels, add toppings, and bake for about 5 more minutes to melt the cheese.
Meat Lover’s – Meat in every bite! Top your mushroom with pepperoni, Italian sausage, ham, and bacon. Season with red pepper flakes if you want to add a little heat. Veggie Lover’s – You can go so many ways with veggie pizzas, but a classic veggie pizza has peppers, onions, cherry tomatoes, and black olives. If you’d like to try some others, add garlic, baby spinach, artichoke, broccoli, or extra mushrooms. For watery vegetables, it’s best to pre-cook them first. Hawaiian – Similar to my Hawaiian pizza bowl, top the mushroom with cheese, ham, and diced pineapple. BBQ Chicken – Top the mushroom with shredded chicken tossed in sugar-free bbq sauce, shredded cheese, diced onions, and cilantro. Margherita – This simple classic is made with tomato sauce, fresh mozzarella and fresh basil leaves. White Pizza – Just like my chicken crust pizza, top the mushroom with alfredo sauce, spinach, red onion, and mozzarella cheese. Add a finishing sauce – For a simple flavor boost, add a drizzle of balsamic glaze to your pizza.
Storage Instructions
Store: Keep leftover mushroom cap pizza in the refrigerator for 3-4 days. Reheat: Bake mushrooms in a 350 degree F oven for best results. Freeze: Freezing mushrooms isn’t ideal, so I would recommend cutting the recipe in half if you think you’ll have extras.
What To Serve With Portobello Mushroom Pizza
Serve this portobello pizza recipe with a healthy side salad:
More Veggie-Packed Healthy Pizza Recipes
If you like this portobello mushroom pizza recipe, you might also like some of these other veggie-packed pizza recipes: Please enter your first name for your account. Your saved recipe will also be sent to your email.
If you’d like, you can pre-bake the mushrooms for 15-20 minutes before adding toppings. Drain, then add toppings and bake again. They turn out less watery this way.
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