Fajitas with Roast Beef Recipe

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Glenda Published: June 24, 2021 Modified: September 8, 2021
Fajitas with Roast Beef Recipe

How To Make Fajitas with Roast Beef

Got leftover roast beef? This easy fajita recipe turns juicy and spiced beef into a quick Mexican dish with tortillas and gravy.

Preparation: 15 minutes
Cooking: 5 minutes
Total: 20 minutes


  • 2tbspcanola oil
  • 1largeonion
  • 1largered bell pepper
  • 2largegarlic cloves
  • 1tbspchili powder
  • kosher salt and freshly ground pepper,to taste
  • ½*Coriander-Dusted Roast Beef,(see Recipe Notes for recipe) or roast beef
  • ¼cupreserved gravy from the roast beef,or other beef gravy
  • 8flour tortillas,warm
  • salsa


  1. In a large skillet, heat canola oil until shimmering. Add onion, bell pepper, garlic, and chili powder and season with salt and pepper.

  2. Cook over high heat for about 5 minutes, stirring, until softened and browned in spots. Add beef and gravy and cook for 1 minute, stirring, until just heated through.

  3. Serve beef and vegetables in warm tortillas with salsa, sour cream, and cilantro.

Recipe Notes

*Check out the Coriander-Dusted Roast Beef Recipe to learn how to make the aromatic dish.


  • Calories: 518.14kcal
  • Fat: 22.66g
  • Saturated Fat: 4.85g
  • Trans Fat: 0.04g
  • Monounsaturated Fat: 11.58g
  • Polyunsaturated Fat: 4.58g
  • Carbohydrates: 56.56g
  • Fiber: 4.79g
  • Sugar: 6.09g
  • Protein: 22.38g
  • Cholesterol: 47.81mg
  • Sodium: 822.00mg
  • Calcium: 195.91mg
  • Potassium: 534.02mg
  • Iron: 5.14mg
  • Vitamin A: 94.23µg
  • Vitamin C: 55.93mg
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