Sheet Pan Portobello Fajitas
User Reviews
4.8
Sheet Pan Portobello Fajitas
Description
This recipe makes a fajita spice blend of chili powder, chipotle powder, onion powder, cumin, garlic powder, sugar, and salt, which coats sliced portobello mushrooms, bell peppers, and onions. Roasting these vegetables at 400ºF for about 40 minutes allows the sugar to caramelize, producing a charred, flavorful exterior while maintaining tenderness inside. Stirring them halfway ensures even cooking and browning.
After roasting, a squeeze of fresh lime juice and a sprinkle of chopped cilantro add brightness and herbal notes. The fajita filling is served in small flour tortillas, with ripe avocado slices providing creaminess and a cool contrast to the roasted vegetables.
The chili powder used is mild and nearly salt-free, enabling precise seasoning control. The sugar element aids caramelization and develops characteristic grilled flavors despite using an oven method rather than a grill.
Ingredients
FAJITA SPICE MIX
- 1 Tbsp chili powder $0.30
- 1/2 tsp chipotle powder $0.05
- 1/2 tsp onion powder $0.05
- 1 tsp cumin $0.10
- 1/2 tsp garlic powder $0.05
- 1 tsp sugar $0.05
- 1/2 tsp salt $0.03
FAJITAS
- 2 portobello mushroom caps $3.99
- 2 bell pepper $2.29, any color
- 2 onion $0.64, yellow
- 3 Tbsp olive oil $0.38
- 8 small flour tortilla $1.00, 6-inch
- 1 avocado $1.09
- handful cilantro $0.25, optional
- 1 lime $0.59, fresh
Instructions
- Preheat the oven to 400ºF. In a small bowl, stir together all the ingredients for the fajita spice mix
- Slice the portobellos, bell peppers, and onions into 1/4 inch wide strips. Place the sliced vegetables on a large sheet pan. Drizzle the olive oil over the vegetables then sprinkle the fajita spice mix over top. Use your hands to toss the vegetables until everything is well coated in oil and spices.
- Roast the vegetables in the fully preheated oven for 40 minutes, or until the vegetables are slightly wilted and the edges have a nice brown color. Stir the vegetables half way through the roasting time to make sure everything gets even exposure to the hot air.
- After removing the vegetables from the oven, squeeze fresh lime juice over top. Sprinkle chopped cilantro over the vegetables. To serve the fajitas, scoop a small amount of the roasted vegetables into each tortilla and add a slice of avocado.
Notes
- Adjust chipotle and salt levels if using different chili powder brands to maintain desired flavor balance.
- The sugar in the spice mix helps caramelize vegetables, mimicking grilled fajita flavors.
Nutrition Information
Show DetailsNutrition Facts
Serving: 4(two fajitas each)
Amount Per Serving
Calories 423 kcal
% Daily Value*
| Serving | 1Serving | |
| Calories | 423kcal | 21% |
| Carbohydrates | 49g | 16% |
| Protein | 9g | 18% |
| Fat | 23g | 35% |
| Sodium | 782mg | 33% |
| Fiber | 9g | 36% |
* Percent Daily Values are based on a 2,000 calorie diet.
User Reviews
Overall Rating
4.8
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