Portobello Mushroom Recipe (2024)

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My Stuffed Portobello Mushroom recipe is easy to make and stuffed with flavor from garlic, herbs, and a bubbly cheese topping. Easy prep with just 20 minutes of baking time and simple ingredients!

Portobello Mushroom Recipes

My family loves this recipe so much that it is requested over and over for Holidays. It is the perfect side dish for slow-roasted prime rib. I love making it ahead of time and popping it in over before our guests arrive.

This is one of my favorite Keto appetizers. I have been known to make a batch at the beginning of the week and nosh on them all week. They are the perfect keto snack!

Roasting portobello mushrooms gives them a delicious texture, and the garlicky, cheesy stuffing is irresistible. You are going to love these cheesy keto mushrooms, I promise!

Stuffed Portobello Mushroom Ingredients

• Portobello Mushrooms: These are large, meaty white mushrooms that make a great substitute for meat in vegetarian dishes. In the case of this recipe, they’re hollowed out and stuffed, then baked. You can find portobello mushrooms in the produce section of your local grocery store.
• Garlic: Minced fresh garlic creates a buttery garlic sauce for these mushrooms. Use a garlic press to make this easy.
• Olive Oil: While you can use other oils, olive oil adds a rich flavor to the dish, so I recommend you use it above other options.
• Salt and Pepper: I recommend using kosher salt or Maldon sea salt flakes, as well as freshly cracked black pepper.
• Dried Thyme: If you want, you can also use fresh thyme. You’ll need one sprig of fresh thyme, if so. But dried thyme works perfectly for this recipe, so it will be delicious either way!
• Butter: I recommend using unsalted butter, but if you want to you can use salted butter, just be sure to lower the amount of added salt.
• Parmesan: Freshly grated Parmesan cheese is the best for this portobello mushroom recipe. I don’t recommend the kind you get in a shaker bottle.
• Mozzarella: I use shredded mozzarella in this recipe. If you can shred your own mozzarella cheese I recommend it. Pre-shredded cheese comes with a powder that makes it a little less creamy when it melts.

How to Cook a Portobello Mushroom

1. Preheat the oven to 400°F.
2. Wipe Portobello mushroomsclean using a damp paper towel and remove the stems.
3. Finely mince one clove of garlic.
4. Lightly oil a baking sheet and place the mushrooms on top in a single layer, open side facing up.
   
5. In a small bowl, mix olive oil,garlic, dried thyme, and a littlesaltandpepperto taste. Drizzle over the inside of each mushroom evenly. Top each with a thin slice ofbutter.
   
6. Bake the mushrooms for 15 minutes until tender.
7. While they are cooking, mix together the Parmesancheese and 3 shreddedMozzarella.
8. After 15 min, top the mushrooms with the cheese and return to the oven for 5 minutes.
9. Once the cheese is golden and bubbly, remove the mushrooms from the oven, serve, and enjoy!

How to Make Air Fryer Portobello Mushrooms

1. Preheat the air fryer to 400°F.
2. Wipe the Portobello mushrooms clean and remove the stems.
3. Finely mince one garlic clove.
4. Lightly oil the air fryer rack and place the mushrooms on top in a single layer, open side facing up.
5. In a small bowl, mix together olive oil, garlic, dried thyme and salt and pepper. Drizzle over the inside of each mushroom evenly. Top each with a thin slice of butter.
6. Reduce the heat to 350°F and bake the mushrooms for approximately 8 minutes until tender.
7. Top the mushrooms with the cheese and return to the oven for around 2-3 minutes.
8. Once the cheese is golden and bubbly, remove the mushrooms from the oven and let cool. Serve, and enjoy!

Portobello Mushrooms Recipe Variations

• Replace the garlic and butter with my homemade Herby Garlic Butter.
• Try your favorite cheeses. Fontina and Gruyere are excellent choices.
• Add an extra protein if you like. Shrimp stuffed portobello mushrooms in the oven are delicious!
• Mix in caramelized onions or sauteed spinach for even more flavor.

How to Clean Portobello Mushrooms

Mushrooms should permanently be wiped clean rather than rinsed. Many oven-baked portobello mushroom recipes remove the gills, but in this case, we leave the gills intact for extra flavor and juiciness.

1. Start by removing the stem. Just trim it with a knife or twist it off. Tip: you can keep the stem to chop up for the stuffing instead of tossing it.
2. Dampen a paper towel. You can also use a (this one is cute!).
3. Gently scrub the cap with a paper towel to clean the outside. You may also want to wipe the gills but don’t remove them.

Portobello Mushrooms Cap Recipes FAQ

What to Serve with Mushrooms

• Prime Rib Roast – A match made in heaven during a special dinner
• Perfect Rice (my absolute favorite way to enjoy this recipe)
• Smothered Pork Chops
• Slow Cooker Short Ribs

Portobella Mushroom Recipes

You can use portobello mushrooms in any of my easy mushroom recipes:

• Mushrooms and Onions
• Air Fryer Mushrooms
• Mushroom Soup
• Chicken Mushroom Recipe
• Pork Chops with Mushroom Gravy

This recipe makes a great side dish for the holidays. Pair it with my other Side Dishes for Ham and Side Dishes for Prime Rib!

Did you try this recipe? Leave a comment and a rating below to let us know what you think! We love to hear from you!

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