Poblano and Mushroom Fajitas
Poblano and mushroom fajitas swap sweet bell peppers for smoky, mild-hot poblanos and swap a single giant portobello for a full pan of small cremini mushrooms, giving a deeper, earthier skillet fajita. Charring the poblano skins first builds a background smokiness that plain bell peppers cannot match, while the cremini brown quickly in the same pan for a varied, bite-sized texture rather than thick steak-like strips.
- Prep
- 15m
- Cook
- 18m
- Total
- 33m
- Serves
- 4
- Level
- easy
A smokier skillet fajita built on charred poblano peppers and browned cremini mushrooms.
Ingredients
Showing ingredients for 4 servings in US customary units.
Vegetables
Seasoning
To finish & serve
Cook times are not scaled with servings — adjust pan size and cook in batches as needed. Salt and “to taste” items are intentionally left for your judgment.
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Step by step
How to make it
Char the poblanos
Step 1. Heat 1 tablespoon oil in a 12-inch skillet over high. Add the poblano strips and let them sit undisturbed for 2 minutes so the skins blister and blacken in spots before tossing.
~5 minStep 2. Add the onion and continue cooking 4–5 minutes, tossing occasionally, until both are blistered and softened. Transfer to a plate.
~5 min
Brown the mushrooms
Step 3. Add the remaining oil to the same skillet. Spread the cremini in a single layer and let sear undisturbed for 3 minutes before stirring, so they brown rather than release into a watery pile.
~3 minStep 4. Continue cooking, stirring occasionally, 3–4 more minutes until deeply browned and any released liquid has cooked off. Stir in the garlic and cumin for the last 30 seconds.
~4 min
Combine
Step 5. Return the poblano and onion to the pan and toss everything together for 1 minute. Season with salt to taste.
~1 min
Serve
Step 6. Squeeze fresh lime over the top and serve in warm tortillas with shredded Monterey Jack if using.
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Pantry & spices
Fresh ingredients
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Cookware & tools
- Lodge 12-inch Cast Iron Skillet · L10SK3Find →
- Lodge Silicone Hot Handle Holder · ASHH11Find →
- ThermoWorks Thermapen ONE · Thermapen ONEFind →
- OXO Good Grips 12-inch Tongs · Good Grips 12" Locking TongsFind →
- Microwave Cloth Tortilla WarmerFind →
- Victoria Carbon Steel Comal · COM-113 (12 in)Find →
- Victorinox Fibrox Pro 8-inch Chef’s Knife · 5.2063.20 (Fibrox Pro 8")Find →
Already own these? Use what you have — no need to buy.
Recommendations are chosen to help you cook better fajitas; some Amazon links may earn a commission at no extra cost to you.
Substitutions
| Instead of | Use | Adjust | Expect | Avoid when |
|---|---|---|---|---|
| Poblano peppers | Anaheim peppers | Use the same weight and slice the same way. | Milder heat with a similar mild-vegetal character. | — |
| Cremini mushrooms | White button mushrooms | Same weight, same slice thickness. | Slightly less earthy flavor but nearly identical texture. | — |
| Corn tortillas | Flour tortillas | — | Softer, more neutral wrapper; corn holds up better to juicy fillings. | — |
The science
Why poblanos taste smokier than bell peppers
Poblanos carry more capsaicin and a broader range of vegetal, slightly bitter compounds than sweet bell peppers, and their thicker skin blisters and blackens readily under high heat, adding genuine char flavor rather than just sweetness. That combination — mild background heat plus blistered skin — is what reads as "smoky" even without a grill or open flame. Letting the poblano strips sit undisturbed for the first two minutes in a hot pan is what gives them time to blister before they soften.
The call: Let poblano strips sit undisturbed briefly so the skin blisters before stirring.
Technique
Searing cremini instead of stewing them
Cremini mushrooms release a surprising amount of water once heat hits them, and if the pan is crowded or the mushrooms are stirred immediately, that water pools underneath and the mushrooms boil in it instead of browning. Spread them in a single layer, leave them alone for a full three minutes, and only then start stirring — by that point most of the released liquid has evaporated and the surfaces can finally brown. Cooking the peppers and onion first also means the pan is already hot and empty when the mushrooms go in.
The call: Sear mushrooms in a single layer without early stirring so they brown, not steam.
Equipment for this recipe
Disclosure: As an Amazon Associate, FajitaRecipe.com earns from qualifying purchases. Recommendations are chosen to help you cook better fajitas; some Amazon links may earn a commission at no extra cost to you. See our selection methodology.
For cast-iron fajitas
LodgeModel L10SK3
A heavy 12-inch Lodge gives two servings of steak enough hot surface to brown without crowding. It is still too small for a six-person batch, which should be seared in rounds.
Best for: Everyday 2–4 serving skillet fajitas with a hard sear.
LodgeModel ASHH11
A cast-iron handle reaches the same temperature as the pan. A slip-on holder is the difference between confidently moving the skillet and dropping it.
Best for: Anyone using a blazing-hot cast-iron or carbon-steel handle.
ThermoWorksModel Thermapen ONE
Thin fajita chicken and steak swing past target in seconds. A one-second read lets you pull chicken at 165°F and steak at your chosen doneness before carryover overshoots.
Best for: A one-second, dependable read on thin proteins.
OXOModel Good Grips 12" Locking Tongs
Twelve-inch tongs keep your hand out of the smoke while you toss peppers and flip strips in a ripping-hot pan.
Best for: Tossing peppers and turning strips over high heat.
For warm tortillas
A damp-cloth warmer steams a stack soft in the microwave and keeps them pliable through dinner — the difference between a taco that folds and one that cracks.
Best for: Warming a stack quickly and keeping them soft at the table.
VictoriaModel COM-113 (12 in)
A dry comal over medium-high blisters tortillas in seconds, giving them the toasty spots a microwave never will.
Best for: Charring tortillas directly and toasting them the traditional way.
For peppers & onions
VictorinoxModel 5.2063.20 (Fibrox Pro 8")
A sharp 8-inch chef’s knife handles the pepper and onion prep fajitas live on. The Fibrox handle grips even when your hands are wet from vegetables.
Best for: Slicing peppers and onions and general prep.
OXOModel Good Grips 12" Locking Tongs
Twelve-inch tongs keep your hand out of the smoke while you toss peppers and flip strips in a ripping-hot pan.
Best for: Tossing peppers and turning strips over high heat.
Serving & storage
Storing and reheating
Refrigerate leftovers within two hours and use within 3–4 days. Reheat in a dry skillet over medium-high heat to re-crisp the mushroom edges; the microwave will soften them and release more liquid into the filling.
Frequently asked questions
+Are poblano peppers very spicy?
No, poblanos are mild, typically 1,000–2,000 Scoville units, similar to a mild jalapeño. They add smoky, vegetal depth more than significant heat.
+Do I need to peel or roast the poblanos first?
Not for this recipe. Slicing them thin and letting them blister undisturbed in a hot skillet builds enough char flavor without the extra step of roasting and peeling whole peppers.
+Why did my mushrooms turn out rubbery and wet instead of browned?
They were likely crowded in the pan or stirred too soon. Spread cremini in a single layer and leave them alone for a few minutes before stirring so their released water can evaporate first.
+Can I use frozen sliced poblano or mushrooms?
Fresh works best for browning. Frozen vegetables release extra water as they thaw and will steam more than sear, so if using frozen, cook them a few minutes longer to drive off that liquid.
Testing, sources & disclosure
This recipe was developed and reviewed by our editors. We publish full kitchen-test notes here once a recipe has been cooked and verified in our kitchen.
- Author:
- FajitaRecipe Editorial
- Last reviewed:
- 2026-07-06
As an Amazon Associate, FajitaRecipe.com earns from qualifying purchases. We do not provide medical or dietary advice; follow USDA guidance for food safety.
Keep cooking
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