There are only 5-Ingredients in this slow cooker steak fajitas recipe. This easy yet delicious crockpot dish is perfect any day of the week.

5-Ingredient Slow Cooker/Instant Pot Steak Fajitas (Low-Carb, Paleo, Whole30)

  • Author: Fit SlowCooker Queen
  • Prep Time: 10 mins
  • Cook Time: 3 hours
  • Total Time: 3 hours 10 minutes
  • Yield: 6 servings 1x


  • 2 lbs beef, sliced
  • 12 bell peppers, sliced
  • 1 onion, sliced
  • 15 ounces salsa or diced tomatoes
  • 2 tbsp fajita seasoning (see blog post for homemade mix)


Slow Cooker

  1. Add all ingredients to the slow cooker. Stir to mix well.
  2. Cook HIGH 2-3 hours, LOW 4-6.

Instant Pot 


  1. Turn on the IP and select Sauté. Once hot add oil to the pot. Add the beef,  onions, and bell pepper until beef is browned and vegetables softened, approximately 5 minutes.
  2. Add remaining ingredients. Stir to mix well.
  3. Close lid and seal valve. Set manual (high) pressure to 9 minutes. Quick release the pressure. Stir & serve.