Portobello Fajita Tacos with Chipotle Pecan Pesto combine the earthiness of grilled mushrooms with a smoky, nutty sauce for a vegetarian twist on taco night. These tacos deliver bold Tex-Mex flavors without meat, featuring char-grilled portobello caps tossed with classic fajita vegetables and topped with a rich chipotle-pecan pesto that adds depth and creaminess.

Why You’ll Love This Portobello Fajita Tacos with Chipotle Pecan Pesto

• Ready in 30 minutes — one skillet, no marinating required
• Pantry-friendly — uses ingredients you likely already have on hand
• Restaurant-quality sauce — smoky chipotle balanced with sweet, toasted pecans

Ingredients

• 4 large portobello mushroom caps (stems removed, sliced into ½-inch strips)
• 1 red bell pepper (sliced into thin strips)
• 1 yellow onion (sliced into thin strips)

Equipment

• Large mixing bowl for combining fajita vegetables
• Non-stick skillet or grill pan (10-12 inch) for cooking vegetables
• Food processor or blender for making the pesto

How to Make {title}

Step 1 — Prepare the vegetables (10 minutes)

Slice the portobello caps, bell pepper, and onion. Place mushrooms in colander, sprinkle with salt, let sit 5-10 minutes to draw out moisture. Squeeze dry with kitchen towel.

Step 2 — Make the chipotle pecan pesto (5 minutes)

Toast pecans in dry skillet for 3-4 minutes until fragrant. In food processor, combine pecans, chipotle peppers, garlic, lime juice, and olive oil. Blend until smooth. Season with salt.

Step 3 — Cook the fajitas (8 minutes)

Toss vegetables with olive oil, cumin, chili powder, salt, and pepper. Heat skillet over medium-high heat. Cook vegetables in batches until charred and tender, 6-8 minutes total.

Step 4 — Assemble and serve (5 minutes)

Warm tortillas. Fill with vegetables and top with pesto. Garnish with cilantro. Serve immediately.

Pro Tips

Dry the mushrooms thoroughly excess moisture is the enemy of good char and can lead to steaming instead of searing.

Don’t overcrowd the pan cook the vegetables in batches to ensure proper browning and caramelization.

Storage & Reheating

Allow cooked vegetables to cool to room temperature, then store in an airtight container in the refrigerator for up to 4 days. The pesto keeps separately for up to 5 days refrigerated. Reheat vegetables in a skillet before using.

What to Serve With Portobello Fajita Tacos with Chipotle Pecan Pesto

Pair these tacos with our Quick Cucumber Salad for a refreshing crunch that cuts through the richness of the pesto.

Nutrition Information

Per serving (2 tacos): approximately 380 calories, 10g protein, 35g carbohydrates, 22g fat, 6g fiber.

Frequently Asked Questions

Can I make the pesto ahead of time?

Yes! The pesto actually tastes better after the flavors have melded. Store in an airtight container in the refrigerator for up to 5 days.

Are these tacos gluten-free?

Yes, as written with corn tortillas these tacos are completely gluten-free.

If you make these Portobello Fajita Tacos with Chipotle Pecan Pesto, we’d love to hear how they turned out! Save this recipe so you can easily find it again for your next Meatless Monday or casual weeknight dinner.