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Slow Cooker Shredded Beef Fajitas on blue plate
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5 from 3 votes

Slow Cooker Shredded Beef Fajitas

Slow Cooker Shredded Beef Fajitas come together with just a few simple ingredients. They are loaded with flavor from the homemade fajita seasoning and fire-roasted tomatoes.
Keyword: bbq beef sandwiches, Cheesesteak sandwiches, crock pot, fajitas, Slow cooker, steak fajitas

Ingredients

  • 2 pounds beef strips (stir-fry strips) or a flank steak
  • 2 - 3 bell peppers, cut into strips
  • 1 large onion, sliced into strips
  • 1 14 ounce can fire-roasted tomatoes
  • 3 tablespoons homemade fajita seasoning
  • tortilla shells
  • sour cream, diced tomatoes, cheese, or guacamole (optional)

Instructions

  • Place beef strips in bottom of slow cooker and add onion slices on top. In a small bowl mix the can of fire-roasted tomatoes with 3 tablespoons of homemade fajita seasoning. You can also use a packaged fajita or taco seasoning if you prefer. Pour tomato mixture over the onions and beef. Cover and cook on low for 5 - 6 hours or until beef is just about fork tender.
  • Add the sliced pepper strips, and cook another 30 minutes or until the meat is fork tender and falling apart and the peppers are tender-crisp.
  • Shred the meat if needed and serve in tortilla shells with your favorite toppings.

Notes

Tips, Tricks, and FAQs

  • The beef I used was steak strips that were marked for "stir-fry", which is perfect for fajitas. Alternatively, you can use a 2 pound flank steak cut into thin strips.
  • If you're using a flank steak, place your it into the freezer for 10-20 minutes--this makes it MUCH easier to slice.
  • Leftovers are served over rice or made into burritos. You could even make the fajitas into a burrito bowl.
  • Once the fajitas are cooled, store in a covered container in the refrigerator for up to 3 days. Leftovers can also be frozen for up to a month.
  • Adding the bell peppers the last hour of cooking will keep them crisp-tender and not mushy.
  • You can use a packaged fajitas seasoning mix if you don't want to make your own seasoning blend.
  • If you don't have or want to use the fire-roasted tomatoes, use a can of regular diced tomatoes.