Smoky Traeger Steak Fajitas with Peppers and Onions

These delicious Traeger Steak Fajitas are built around a reverse-seared steak: the meat is cooked low and slow on a pellet grill, rested, then quickly seared with a squeeze of lime and Mexican-inspired seasonings. The sliced steak is tucked into warm tortillas alongside blistered bell peppers and onions for a smoky, juicy fajita that’s perfect for family dinners and backyard gatherings.

Traeger Steak Fajitas

These Traeger Reverse-Seared Steak Fajitas combine smoky, tender beef with quickly charred peppers and onions. Reverse searing produces a uniformly cooked steak with a juicy interior; finishing it in a hot skillet builds a flavorful crust. Serve the sliced steak and veggies in warm tortillas or over rice, and offer plenty of toppings so guests can customize their plates.

Reverse searing is ideal for achieving precise doneness because the low-and-slow phase brings the interior up gently, and the final sear locks in flavor and texture. The pellet grill adds a subtle wood-smoke note that complements Mexican-style seasonings beautifully.

Why You’ll Love This Dish

• Perfectly cooked steak — reverse searing delivers even doneness and a great crust.
• Smoky pellet-grill flavor — low-and-slow cooking infuses the beef with subtle smoke.
• Bright, colorful vegetables — bell peppers and onions add sweetness and crunch.
• Crowd friendly — easy to serve family-style with lots of topping options.
• Flexible — works with flank, skirt, or sirloin and any favorite spice blend.

Pellet Grill Steak Fajitas — Shopping List

Below are the items you’ll need to make these fajitas. For exact quantities and a printable recipe, see the recipe section further down.

• Steak — flank, skirt, or sirloin are all good choices; pick well-marbled cuts for more flavor.
• Salt — to season and enhance the beef’s natural flavor.
• Pepper — freshly ground is best for aroma and mild heat.
• Spicy rub or taco seasoning — a smoky, zesty blend complements the grill smoke.
• Red bell pepper — for sweetness and color.
• Yellow bell pepper — adds mild sweetness and brightness.
• Onion — a medium white or yellow onion works well.
• Oil — neutral oil for searing the steak and sautéing the vegetables.
• Tortillas and toppings — flour tortillas, lime wedges, salsa, pico de gallo, guacamole, or refried beans as desired.

How To Make Steak Fajitas on a Pellet Grill — Overview

This overview covers the main steps. Follow the full recipe below when you cook.

1. Preheat pellet grill to 225°F (107°C).
2. Season the steak with salt, pepper, and your chosen spice blend.
3. Smoke the steak on the grill for 30–45 minutes, or until the internal temperature reaches about 120°F (49°C) for medium-rare.
4. Remove the steak and let it rest for 10–15 minutes.
5. Sauté sliced peppers and onions in 1 tablespoon of oil over high heat, then set aside.
6. Slice the rested steak against the grain, add remaining oil to a hot skillet, and sear the slices 1–2 minutes to develop a crust.
7. Toss steak with the peppers and onions, finish with lime if desired, and serve in warm tortillas.

Steak Fajitas — FAQ

Tips for Perfect Steak Fajitas

• Rest the steak: Let it rest 10–15 minutes after smoking so juices redistribute for tender slices.
• High-heat sear: A very hot skillet delivers the Maillard reaction that gives the steak a savory, caramelized crust.
• Slice against the grain: Cut at a slight angle across the grain into strips about 1½–2 inches long and ½–¾ inch wide for the most tender bites.

Best Toppings and Sides for Fajitas

A few simple toppings elevate these fajitas: lime wedges, pico de gallo, guacamole, salsa, and creamy refried beans are classic choices. Serve with warm flour tortillas so everyone can assemble their own.

Suggested sides and accompaniments:

• Mexican rice
• Refried beans
• Pico de gallo
• Guacamole
• Salsa verde or red salsa
• Lime wedges

These Traeger reverse-seared steak fajitas combine smoky beef, sizzling vegetables, and bold seasoning for a colorful, satisfying meal. They’re straightforward to prepare, great for entertaining, and forgiving enough to adapt to other cuts of steak or seasoning blends.

Yield: 6 servings

Reverse Seared Steak Fajitas

These easy steak fajitas are reverse-seared on a pellet grill and finished in a hot cast-iron skillet with peppers and onions for the best texture and flavor.

Prep Time: 10 minutes

Cook Time: 1 hour 15 minutes

Rest Time: 10 minutes

Total Time: 1 hour 35 minutes

Ingredients

• 2 pounds steak (flank, skirt, or sirloin)
• 1 teaspoon salt
• ½ teaspoon pepper
• 1 tablespoon spicy rub or taco seasoning
• 1 red bell pepper, sliced
• 1 yellow bell pepper, sliced
• 1 medium onion, sliced
• 2 tablespoons oil, divided
• Tortillas and desired toppings

Instructions

1. Preheat your pellet grill to 225°F (107°C).
2. Season the steak with salt, pepper, and the spicy rub or taco seasoning.
3. Place the steak on the grill and smoke for 30–45 minutes, or until the internal temperature reaches about 120°F (49°C) for medium-rare.
4. Remove the steak and rest it for 10–15 minutes.
5. While the steak rests, heat 1 tablespoon oil in a large cast-iron skillet over high heat. Quickly sauté the peppers and onions until blistered and slightly softened, then set aside.
6. Slice the steak across the grain into strips. Add the remaining tablespoon oil to the hot pan, add the steak strips, and sear 1–2 minutes until browned.
7. Toss the seared steak with the peppers and onions, finish with a squeeze of lime if desired, and serve with warm tortillas and toppings.

Notes

If you don’t have a spicy pork rub, substitute your favorite taco or fajita seasoning. For best texture, sear the steak just before serving.

Nutrition (per serving, estimate)

Calories: 364 | Total Fat: 25g | Saturated Fat: 9g | Cholesterol: 110mg | Sodium: 332mg | Carbohydrates: 4g | Fiber: 1g | Sugar: 2g | Protein: 30g