Portobello Mushroom Pizza with Easy Homemade Pizza Sauce [Gluten Free]

Portobello Mushroom Pizza with Easy Homemade Pizza Sauce [Gluten Free]

Making homemade pizza sauce is basically the most Italian thing I’ve ever done, including spending a summer in Italy and having a tomato thrown at me for being a loud, drunk American girl.

Two fun facts about pizza: in Italy, it was originally a poor man’s food because it can be made with staples that are pretty inexpensive (flour, water, tomatoes) and pizza tastes better with uncooked sauce. I decided to test the second statement with this recipe.

Portobello Mushroom Pizza with Easy Homemade Pizza Sauce [Gluten Free]

I was craving pizza but have literally eaten one meal at home since coming back to SF on Tuesday so I knew I needed to make some sort of iteration at home. I had a doughy, carb-y lunch (The Rebel Within at Craftsman and Wolves) so I wanted to go with a pretty much carb-less crust. Enter portobello mushrooms.

This is another “clean out the pantry” recipe. I had randomly stocked up on crushed tomatoes and tomato paste over the winter, probably assuming I was going to make chili but um, it’s never really cold enough for chili here.

Portobello Mushroom Pizza with Easy Homemade Pizza Sauce [Gluten Free]

So the verdict on uncooked sauce? Definitely into it. It gave a little zest most other jarred varieties lack. Now after a couple days of eating super clean, I’ll be ready to eat a normal crust with the rest of this sauce. Yum.

Portobello Mushroom Pizza with Easy Homemade Pizza Sauce [Gluten Free]

Portobello Mushroom Pizza with Easy Homemade Pizza Sauce [Gluten Free]
Prep time
Cook time
Total time
Recipe type: Dinner
Cuisine: Gluten Free, Vegetarian
Serves: 4 mushroom pizzas
  • 4 Portobello Mushroom Caps
  • 4 oz fresh mozzarella cheese
  • ¼ cup Easy Homemade Pizza Sauce (recipe below)
  • 2 oz queso fresco (or other cheese of your choice)
  • 1 tsp olive oil
  • ½ tsp basil
  • ½ tsp oregano
  • ¼ crushed red pepper
  • salt + pepper
Easy Homemade Pizza Sauce
  • 1 15 oz can fire roasted tomatoes
  • 1 8 oz can tomato paste
  • 1 tbsp balsamic vinegar
  • 1 tsp chopped shallots
  • 1 tsp chopped garlic
  • 1 tsp basil
  • 1 tsp oregano
  • ½ tsp olive oil
  • salt + pepper
  1. Preheat oven to 400F.
  2. Wash and dry mushrooms, cutting off stems.
  3. Brush mushrooms with olive oil and season with salt and pepper.
  4. Place mushrooms on a baking sheet lined with a Slipat or aluminum foil and roast for 10 minutes.
  5. While mushrooms are roasting, place all pizza sauce ingredients in a food processor and process for 30 seconds or until smooth.
  6. Remove mushrooms from oven. If any liquid has formed in the cap, carefully pour it off.
  7. Spoon pizza sauce equally among mushrooms.
  8. Place cheese on top of pizza sauce.
  9. Sprinkle basil, oregano, crushed red pepper and salt and pepper evenly on top of cheese.
  10. Place mushrooms back in oven and bake for another 10 minutes or until tops begin to brown and cheese is melted.
  11. Store extra pizza sauce in covered container in refrigerator for up to one week.

If you’re looking for more Meatless Monday recipes, check out the Meatless Monday round-up from Tina Muir and Confessions of a Mother Runner.

Chat with me:
Do you prefer to eat out or make a homemade meal? What meals do you make when you have to clean out the pantry?

17 comments on “Portobello Mushroom Pizza with Easy Homemade Pizza Sauce [Gluten Free]

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Tina Muir on September 14, 2015 6:43 am

LOVE LOVE LOVE recipes with portobella mushroommmmsssssss! This sounds delicious! Thanks for sharing!

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Susie @ SuzLyfe on September 14, 2015 7:16 am

Gah another recipe reminding me that I need to cook with portobellos again! What is wrong with me!!

Don’t answer that.
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Dietitian Jess on September 14, 2015 8:43 am

Portobellos- yum! I love making my own sauce but sometimes I’m lazy and Trader Joes sauce will have to do- thanks for sharing a quick homemade sauce recipe!
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Deborah @ Confessions of a Mother Runner on September 14, 2015 9:28 am

I love making my own veggie pizzas! Yummy. Thanks for linking up with us for Meatless Monday have a great week
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heather on September 14, 2015 10:55 am

They look and sound delicious. Thanks for sharing
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Alyssa @ RenaissanceRunnerGirl on September 14, 2015 12:47 pm

Mushrooms and pizza and cheesy goodness, all for my GF self? Sign me up!
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Sam @ PancakeWarriors on September 14, 2015 1:14 pm

I’m coming over for pizza!! I absolutely love portobello mushrooms, and I just can’t get enough of these fun recipes. I LOVE that my BF doesn’t love mushrooms, that makes things like this ALL FOR ME!!
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Shashi at RunninSrilankan on September 14, 2015 2:04 pm

I so so love that you used mushroom caps to hold that delectably herb filled sauce! Though, I hate to say this, but that sauce sounds so good, I might just have grabbed a spoon and slurped it all up before I even entertained thoughts of pizza! :)

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Kelsi on September 14, 2015 2:14 pm

What a great idea for a healthier pizza! I’ve never heard of uncooked sauce thing – I’ll definitely have to try that next time. I wonder if that’s true for pasta dishes too?
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Ree on September 14, 2015 2:41 pm

What a great idea! I could eat pizza every single day of the week :)
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Liz on September 14, 2015 3:13 pm

What a great idea!! Perfect for low carb/gluten free pizza lovers :)
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Rachel@ Athletic Avocado on September 14, 2015 4:10 pm

such a great way to enjoy pizza! I love how you made your own sauce!
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Wendy @ WendyPolisi on September 14, 2015 4:17 pm

I am a total carb girl but I know whenever I need to lose weight cutting my carbs is the best way to go. This is genius!
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Chris on September 15, 2015 9:04 am

I bet that is so weird going from Pittsburg (chili all the time I assume) to SF (no chili?). Man I love me some fall/winter soup/chili! I’m a fan of portobellos too but I never ever make them. Your recipe sounds and looks quite lovely! =)
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Erin @ Her Heartland Soul on September 15, 2015 9:37 pm

This looks fabulous!
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Dani @ Dani California Cooks on September 16, 2015 11:54 pm

Love this! So fresh and easy!
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Nicole @ Foodie Loves Fitness on September 16, 2015 11:57 pm

I absolutely love making homemade marinara… my favorite is cooking a big old pot, and dipping into it with fresh crusty bread! I also dig portobello pizza, and need to make them soon!
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