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Oven Roasted Portabella Mushroom Caps

September 4, 2015 by Emily Brees Leave a Comment - This post may contain affiliate links.

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Two vegetarian options for delicious Oven Roasted Portabella Mushroom Caps. Portabella Mushroom are marinated then choose to serve them with either avocado rice or zucchini + tomatoes for a healthy mushroom dinner!

Portabellas plated

I lived in the mushroom state for awhile – Pennsylvania that is. Today’s post is focused on none other than fabulous fungi.

NPR did a short story on Chester County, PA which produces over 50% of the country’s mushrooms. According to Modern Farmer, Chester County produces over 400 million pounds of mushrooms – a $3.7 million dollar industry.  That’s a lot of shrooms!

Even more impressive is the powerful antioxidant derived from the soil that only mushrooms can synthesize –L-ergothioneine. So the only way for humans to access this antioxidant, which studies have shown to have effect on inflammatory diseases, is by consuming mushrooms!  Penn State has a dedicated Center for Plant and Mushroom Foods for Health and one of their research focuses is this antioxidant. A short powerpoint outlining the health benefits of different kinds of mushrooms can be read here.


How to Marinate Portabella Mushrooms

Preparing this dish couldn’t be easier. I made them two nights in a row – each night with a different twist.

  • The first attempt I only marinated the mushrooms for about 40 minutes.
  • The second try, the mushrooms had the opportunity to sit overnight in the marinade.  

Both marinade times resulted in pretty much the same flavor.

In a pinch for time, you could shorten the marinade time to fit your schedule. Mushrooms soak up flavor so quickly.

Two Options for Oven Roasted Portabella Mushroom Caps

Option 1: Top these Roasted Portabella with Cherry Tomatoes and Zucchini Noodles.

Option 2: Serve these Roasted Portabella with Avocado Rice and Cherry Tomatoes.

PIN IT

portabella mushroom recipe
Print
Roasted Portabella Topped with Cherry Tomatoes and Zucchini Noodles
Prep Time
40 mins
Cook Time
20 mins
Total Time
1 hr
 

Zucchini noodles, cherry tomatoes and roasted portabellas - a perfection vegetarian meal!

Course: Main Course
Cuisine: American
Keyword: mushrooms, vegetarian
Servings: 2
Calories: 365 kcal
Author: Emily Brees | OatandSesame
Ingredients
  • 2 large portabella mushrooms caps marinated
  • 1 pint cherry tomatoes halved
  • 1 medium zucchini julienned
  • 1 tbsp fresh thyme
  • 1 tbsp fresh parsley
  • 2 tbsp grated Pecorino Romano or Parmesan
  • 1/4 cup pine nuts toasted
  • salt and pepper to taste
Marinade
  • 1/2 cup sherry cooking wine or any other cooking wine
  • 1 tablespoon olive oil
  • 2 tablespoons dark soy sauce
  • 2 tablespoons white balsamic vinegar dark is ok too
Instructions
PREPARE THE MUSHROOMS
  1. Remove the stems from the mushrooms. With a wet paper towel or mushroom brush, clean the mushroom tops so they are free of any dirt.

  2. Combine the marinade ingredients in a plastic bag and add the mushrooms. Marinate for at least 30 minutes up to 24 hours. Toss the mixture a few times during the marinade process.
  3. When your ready, roast the mushrooms on a foil lined rimmed baking sheet for 20 minutes at 400F, flipping the mushroom halfway through.

  4. While the mushrooms are roasting, prepare the pine nuts, zucchini noodle & tomato mixture.

PREPARE THE PINE NUTS, ZUCCHINI & TOMATOES
  1. In a small skillet, heat the pine nuts until just starting to brown, tossing as they heat. Set aside.

  2. Cut the tomatoes in half, place in a bowl and season with salt. Set aside.
  3. Using a julienne peeler or spiralizer, make the zucchini noodles. If the zucchini is particularly watery, blot it with a paper towel.

  4. When there is about 5 minutes left on the mushrooms, proceed to heat a small skillet with a tablespoon of olive oil. Add the zucchini noodles and cherry tomatoes. Heat for 3-4 minutes, tossing a bit while you go, until tomatoes start to wilt and zucchini is heated through.

  5. Season with salt and pepper.

ASSEMBLY
  1. Once the mushrooms are tender, remove and sprinkle with sea salt (I used Maldon finishing salt available here) and the chopped thyme.
    Plate the mushrooms, top with zucchini tomato mixture.
    Sprinkle with toasted pine nuts, cheese and fresh parsley.
  2. Plate the mushrooms, top with zucchini tomato mixture.

  3. Sprinkle with toasted pine nuts, cheese and fresh parsley.

Nutrition Facts
Roasted Portabella Topped with Cherry Tomatoes and Zucchini Noodles
Amount Per Serving (1 g)
Calories 365
* Percent Daily Values are based on a 2000 calorie diet.
portabella mushroom recipe
Print
Roasted Portabella Topped with Avocado Rice + Cherry Tomatoes
Prep Time
40 mins
Cook Time
40 mins
Total Time
1 hr 20 mins
 
These portabellas sit on top of creamy avocado rice - which is amazing by itself!
Course: Main Course
Cuisine: American
Keyword: avocado rice, mushrooms, vegetarian
Servings: 2
Calories: 637 kcal
Author: Emily Brees | OatandSesame
Ingredients
Mushrooms
  • 2 large portabella mushrooms caps marinated
  • 1 pint cherry tomatoes halved
  • 1 tbsp fresh thyme chopped
  • 4 tbsp fresh basil chiffonade
  • 1/4 cup pine nuts toasted
  • salt to taste
  • Aleppo pepper you can use regular, but Aleppo brings out a complex flavor! You can find it through the photo link below
Avocado Rice
  • 1/2 cup dry long grain brown rice cooked
  • 1 ripe avocado mashed
  • 1/2 tsp salt more to taste
  • Marinade
  • 1/2 cup sherry cooking wine or any other cooking wine
  • 1 tablespoon olive oil
  • 2 tablespoons dark soy sauce
  • 2 tablespoons white balsamic vinegar dark is ok too
Instructions
PREPARE THE MUSHROOMS
  1. Remove the stems from the mushrooms. With a wet paper towel or mushroom brush, clean the mushroom tops so they are free of any dirt.

  2. Combine the marinade ingredients in a plastic bag and add the mushrooms. Marinate for at least 30 minutes up to 24 hours. Toss the mixture a few times during the marinade process.

  3. When your ready to roast the mushrooms, first prepare the rice. Then once that's going, roast mushrooms on a foil lined rimmed baking sheet for 20 minutes at 400F, flipping the mushroom halfway through.

PREPARE THE RICE
  1. Add rice and water according to package instructions. Add a 1/4 tsp salt and bring to a boil, reduce heat to low, cover and simmer for 40 minutes.

  2. When the rice is done, mix in the mashed avocado and add salt to taste.

PREPARE THE PINE NUTS & TOMATOES
  1. In a small skillet, heat the pine nuts until just starting to brown, tossing as they heat. Set aside.

  2. Cut the tomatoes in half, place in a bowl and season with salt. Set aside.

PUT IT ALL TOGETHER
  1. Once the mushrooms are tender, remove and sprinkle with sea salt (I used Maldon finishing salt available here) and the chopped thyme.

  2. Plate the mushrooms, top with rice and sliced tomatoes. Sprinkle with Aleppo pepper and a dash of salt. Add toasted pine nuts and fresh basil.

Nutrition Facts
Roasted Portabella Topped with Avocado Rice + Cherry Tomatoes
Amount Per Serving (1 g)
Calories 637
* Percent Daily Values are based on a 2000 calorie diet.

Want to try growing your own mushrooms?  All you need is a mushroom log!
mushroom

Two FABULOUS ways to eat Portabella Mushrooms - an easy marinade that can be done quickly or ahead of time. Plus avocado rice! Yum! | #DINNER | #MUSHROOMS | #PLANTBASED | #VEGAN | #VEGETARIAN | #Recipes at OatandSesame.com

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I'm Emily - a home cook, gardener and recipe creator located in Flagstaff, AZ.

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