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Delicious slow-cooked and tender steak fajitas with sweet bell peppers. Tons of flavor all the ease in preparation!

Crockpot Steak Fajitas

Delicious slow-cooked and tender crockpot steak fajitas with sweet bell peppers. 
Course Dinner
Cuisine Mexican
Keyword Crockpot Steak Fajitas
Prep Time 15 minutes
Cook Time 5 hours
Total Time 5 hours 15 minutes
Servings 4 -6
Author Chelsea


  • 1 and 1/2 pounds flank or top sirloin steak


  • 4 tablespoons orange juice
  • 4 tablespoons white vinegar
  • 2 tablespoons soy sauce
  • 2 teaspoons minced garlic
  • 1 teaspoon seasoned or plain salt
  • 1/4 teaspoon ground cayenne pepper
  • 1 teaspoon ground cumin


  • 1 can (14.5 ounces) diced tomatoes
  • 1 can (4 ounces) fire-roasted diced green chiles
  • 1 teaspoon minced garlic
  • 1/2 - 1 full jalapeno I use 1/2 and seeds out
  • 1 tablespoon chopped cilantro
  • 2-3 large sweet bell peppers
  • Optional: 1 yellow onion
  • Serve with: flour or corn tortillas, fresh squeeze of lime, cheese, sour cream, salsa, guac/avocado


  • Cut the steak into thin strips* and add to a large plastic bag.
  • Pour the orange juice, white vinegar, soy sauce, minced garlic, 1 teaspoon seasoned or regular salt, cayenne pepper, and cumin over the steak.
  • Massage into the steak and seal the bag tightly. Place in the fridge overnight or for at least 1 hour.

In the crockpot

  • Place the diced tomatoes (undrained), fire roasted diced green chiles, minced garlic, diced jalapeno, and chopped cilantro in a large crockpot. I use a 6-quart crockpot.
  • Place the marinated meat (discard marinade) on top.
  • Mix together the fajita seasonings (above recipe) or use your own homemade fajita seasoning mix. Stir everything together.
  • If desired add a sliced onion too (my husband hates onions so we omit)
  • Cover and cook on low for 3-4 hours. Then add in the sliced sweet bell peppers and cook on low for another 2-3 hours for a total of 5-7 hours on low*
  • Remove from the crockpot and serve on flour or corn tortillas with a few squeeze of fresh lime, grated cheese, sour cream, salsa, guac or avocado, or whatever fajita fixings you like best!


* It may even take 4 hours depending on how hot your crockpot is and what type of meat you use. (Sirloin is faster than Flank Steak) Watch the meat carefully since all crockpots cook differently. If you cook too long the meat will shred and not stay in strips. If you want a truly set it and forget it meal, you can place the steak in the crockpot WHOLE without slicing it into strips and cut or shred it after it's done cooking.