Overhead view of three flour tortillas topped with cooked fajita steak topped with cooked onions, green bell peppers, red bell peppers, and shredded cheese all on a wooden surface

Slow Cooker Steak Fajitas

Use your slow cooker to make delicious and easy steak fajitas with a homemade seasoning that is sure to be a hit with the family. 
Course Main Dish
Cuisine Mexican
Keyword fajita, steak, vegetable
Prep Time 10 minutes
Cook Time 8 hours
Total Time 8 hours 10 minutes
Servings 6 fajitas
Calories 474kcal
Author Stephanie Lynch



  • 2 lbs beef
  • 1 green bell pepper
  • 1 red bell pepper
  • 1 onion
  • 10 oz salsa
  • 2 tbsp fajita seasoning
  • 6 tortilla shells
  • fajita toppings such as cheese, sour cream, cilantro as desired


  • Slice the beef and vegetables into thin slices
  • Add meat, vegetables, and salsa to the slow cooker
  • Sprinkle with fajita seasoning and stir to coat
  • Cover and cook on low for 6-8 hours or high for 3-4 hours
  • Use a slotted spoon or tongs to remove the meat and vegetables and build your fajitas on a tortilla shell
  • Top with cheese, sour cream, cilantro, or any other desired toppings


Note: Nutrition facts are calculated without any toppings


Serving: 1fajita | Calories: 474kcal | Carbohydrates: 15g | Protein: 28g | Fat: 33g | Saturated Fat: 12g | Cholesterol: 107mg | Sodium: 533mg | Potassium: 674mg | Fiber: 3g | Sugar: 4g | Vitamin A: 999IU | Vitamin C: 44mg | Calcium: 59mg | Iron: 4mg