Name: Recipe "Fajita Stuffed Mushrooms"
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Ingredients: 1.5 tsp chili powder; 1 tsp cumin; 0.5 tsp garlic powder; 0.5 tsp onion powder; 0.5 tsp smoked paprika; 1 tsp kosher salt; 0.25 tsp black pepper; 6 portobello mushrooms; 1 tbsp olive oil or avocado oil; 1 small green bell pepper (stemmed, seeded, and sliced); 1 small red bell pepper (stemmed, seeded, and sliced); 1 small yellow bell pepper (stemmed, seeded, and sliced); 1 small red onion (sliced); 1 tbsp fresh lime juice; 15 oz black beans (rinsed and drained); 2 tbsp fresh cilantro (chopped); 1 cup shredded Mexican blend cheese; guacamole; pico de gallo; cilantro; sour cream or plain Greek yogurt

Another reason to love vegetarian: Roasted Mushroom and Gruyere Toasts, Roasted Sweet Potatoes with Agave Nectar and Fresh Rosemary, Rosemary Roasted Almonds, or Tofu Tostadas.

What Makes These Fajita Stuffed Mushrooms Special

These Fajita Stuffed Mushrooms take all the bold flavors of classic fajitas and pack them into tender portobello caps. I already love stuffed mushrooms, I make lasagna and enchilada versions often, but this one has become my new go-to. The juicy mushrooms hold a colorful mix of sautéed peppers, onions, black beans, and melted cheese. Top with guacamole, pico de gallo, or sour cream, and you’ve got a satisfying vegetarian dinner that’s ready in about 30 minutes.

Why You’ll Love These Fajita Stuffed Mushrooms

All the bold fajita flavors without the tortilla, the mushrooms are a tender, savory vessel that complements the spicy filling.
Ready in about 30 minutes, making it a quick weeknight dinner option.
Naturally vegetarian and easy to make vegan by omitting the cheese or using a dairy-free alternative.

Key Ingredients for Stuffed Portobello Mushrooms

Portobello mushrooms: Look for caps that are firm and large enough to hold the filling. Use a spoon to gently scoop out the gills, this creates room and prevents a bitter taste.
Homemade fajita seasoning: A blend of chili powder, cumin, garlic powder, onion powder, smoked paprika, salt, and pepper. Making your own lets you control the spice level and avoids added fillers.
Black beans: Canned black beans (rinsed and drained) add protein and texture. They also help bind the filling together so it doesn’t fall out of the mushrooms.

Kitchen Tools You’ll Need for This Recipe

Large cast iron skillet (or any heavy-bottomed skillet)
Rimmed baking sheet with a wire rack
Spoon for removing mushroom gills
Small bowl for mixing seasoning
Measuring spoons

Tips for Making the Best Fajita Stuffed Mushrooms

Don’t skip removing the mushroom gills, they can make the filling soggy and taste slightly bitter. Use a spoon to gently scrape them out. Also, cook the peppers and onions over medium-high heat so they soften but keep a little crunch. The lime juice adds brightness; add it near the end to keep the flavor fresh.

If you want the cheese extra bubbly, pop the mushrooms under the broiler for the last minute. Keep a close eye, cheese can go from melted to burnt quickly.

Expert Tips for Perfect Portobello Mushroom Fajitas

To keep the mushrooms from releasing too much water while baking, place them on a wire rack over a baking sheet. This allows steam to escape and the caps to crisp slightly underneath. Also, don’t overfill the mushrooms, a generous mound is fine, but if the filling spills over, it can burn on the pan. Season the inside of the mushroom caps with a pinch of salt before filling to draw out any excess moisture.

How to Prep These Stuffed Mushrooms in Advance

You can prepare the pepper and bean filling up to 2 days ahead and keep it refrigerated. When ready to bake, stuff the mushrooms and top with cheese. Alternatively, assemble the mushrooms completely (without baking), cover, and refrigerate for up to 24 hours. Bake straight from the fridge, adding 5 minutes to the baking time.

Variations to Try with These Stuffed Mushrooms

Swap the black beans for pinto beans or refried beans for a different texture. Add cooked shredded chicken or ground beef if you want a non-vegetarian version. For a dairy-free option, omit the cheese or use a vegan shred that melts well. If you like extra heat, stir a diced jalapeño into the pepper mixture or top with sliced fresh jalapeños before baking.

Serving Suggestions for Fajita Stuffed Mushrooms

I like to serve these mushrooms with a generous dollop of guacamole, a spoonful of pico de gallo, and a sprinkle of fresh cilantro. A drizzle of sour cream or plain Greek yogurt adds a cool, creamy finish. For a heartier meal, pair them with a simple side salad or Mexican rice. The mushrooms are hearty enough on their own, but the toppings make each bite different.

How to Store Leftover Fajita Stuffed Mushrooms

Store leftover mushrooms in an airtight container in the refrigerator for up to 3 days. The mushrooms will soften, so reheat gently to avoid making them mushy.

Can You Freeze Fajita Stuffed Mushrooms?

Yes, you can freeze the assembled but unbaked mushrooms. Place them on a baking sheet in a single layer and freeze until solid, then transfer to a freezer-safe bag for up to 2 months. Bake directly from frozen, adding about 10 minutes to the baking time. If baked first, let cool completely, then freeze; reheat in the oven at 350°F until warmed through.

Best Way to Reheat Stuffed Portobello Mushrooms

Reheat leftover mushrooms in a 350°F oven for about 10 minutes, or until warmed through. The microwave works in a pinch but will make the mushrooms softer. For best texture, use the oven or an air fryer at 350°F for 5-7 minutes.

Fajita Stuffed Mushrooms FAQs

Do I have to remove the gills from the portobello mushrooms?

Yes, it’s recommended. The gills can make the filling soggy and add a slightly bitter taste. They also take up space that could be filled with the fajita mixture. Simply use a spoon to gently scrape them out before stuffing.

What can I use instead of black beans?

Pinto beans, refried beans, or even cooked lentils work well. If you want more protein, you can also use shredded chicken or crumbled tofu. Just adjust the seasoning to taste.

Can I use baby bella mushrooms instead of portobellos?

You can, but baby bellas are much smaller. You’ll need to adjust the filling amount and baking time accordingly. Portobellos are ideal because their large, flat caps hold the filling nicely and make a satisfying main dish.

How do I prevent the mushrooms from becoming soggy?

Baking them on a wire rack helps air circulate underneath, allowing steam to escape. Also, removing the gills and not overfilling reduces excess moisture. For extra insurance, you can briefly salt the inside of the caps before filling.

Is this recipe gluten-free?

Yes, as written. The fajita seasoning is made from pure spices, and all other ingredients are naturally gluten-free. Just double-check that your black beans and cheese are certified gluten-free if you have a sensitivity.

Recipe

Fajita Stuffed Mushrooms

Portobello mushrooms stuffed with sautéed peppers, onions, black beans, and cheese. All of your favorite fajita flavors stuffed in a mushroom! Serve with your favorite toppings for a fun and delicious vegetarian meal.

easyVegetarian

10 min

Prep Time

30 min

Cook Time

40 min

Total Time

Servings

Appetizer

Course

Tex-Mex

Cuisine

431 kcal

Calories

Ingredients

Servings

1.5 tsp chili powder
1 tsp cumin
0.5 tsp garlic powder
0.5 tsp onion powder
0.5 tsp smoked paprika
1 tsp kosher salt
0.25 tsp black pepper
6 portobello mushrooms
1 tbsp olive oil or avocado oil

1 small green bell pepper, stemmed, seeded, and sliced
1 small red bell pepper, stemmed, seeded, and sliced
1 small yellow bell pepper, stemmed, seeded, and sliced
1 small red onion, sliced
1 tbsp fresh lime juice
15 oz black beans, rinsed and drained
2 tbsp fresh cilantro, chopped
1 cup shredded Mexican blend cheese

serving

guacamole
pico de gallo

cilantro
sour cream or plain Greek yogurt

Instructions

1
Preheat the oven to 400 degrees F. Set a wire rack on a rimmed baking sheet and set aside. With a spoon, gently scoop out the gills that are inside the Portobello mushrooms. Discard the gills and set the mushrooms aside.
2
In a small bowl, combine the chili powder, cumin, garlic powder, onion powder, smoked paprika, salt and pepper.
3
In a large cast iron skillet, heat the oil over medium-high heat. Add the peppers and onions; stir until the veggies are coated in the oil. Add the fajita seasoning and cook for 5 minutes, stirring frequently. Stir in the lime juice and cook for 2 minutes. The vegetables should be tender but still slightly crisp.

4
Stir in the black beans and cilantro. Divide the pepper and bean mixture evenly between the portobello mushrooms. Sprinkle cheese evenly over the mushrooms.
5
Place the mushrooms on the wire rack and bake for 20-25 minutes or until the cheese is melted and mushrooms are tender. If you want to brown the cheese on the top, put the pan under the broiler for 1 minute. Make sure you watch the mushrooms closely; the cheese will brown quickly.
6
Remove from the oven top with desired toppings. Serve warm.

Nutrition (per serving)

431kcal

Calorie breakdown

Protein23%102 kcal

Fat35%151 kcal

Carbohydrates42%187 kcal

How this was calculated — 15 of 21 ingredients matched

chili powderSpices, chili powder21 kcal

cuminSpices, cumin seed19 kcal

garlic powderSpices, garlic powder8 kcal

onion powderSpices, onion powder9 kcal

smoked paprikaSpices, paprika7 kcal

kosher saltSalt, table0 kcal

black pepperSpices, pepper, black3 kcal

portobello mushroomsMushroom, white, exposed to ultraviolet light, raw1 kcal

olive oil or avocado oilOil, oat133 kcal

fresh lime juiceLime juice, raw4 kcal

black beansBeans, black, mature seeds, raw1450 kcal

fresh cilantroCoriander (cilantro) leaves, raw7 kcal

shredded Mexican blend cheeseCheese, Mexican blend922 kcal

cilantroCoriander (cilantro) leaves, raw0 kcal

sour cream or plain Greek yogurtYogurt, Greek, strawberry, nonfat1 kcal

Serving size ≈ 127 g · 6 servings

Nutrition information is automatically calculated from USDA FoodData Central, so should only be used as an approximation. Actual values may vary depending on the ingredients, brands, and preparation methods used.

Open in analyzer

Keyword: gluten-free, glutenFree, nutFree, Oven Baked, vegetarian

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