Easy Slow Cooker Chicken Fajitas

These Slow Cooker Chicken Fajitas are perfect for meal prep! Dump in the ingredients then set it to cook all day for a hands-off dinner.

This dish make amazing leftovers, so you’ll have a delicious, fuss-free meal prepped and ready to go for the week. Trust me, this is one of those recipes you’ll keep coming back to!

Why you'll love this recipe

• Easy dinner: Throw everything in the crockpot and let it cook all day. Easy peasy!
• Meal prep friendly: Make it ahead of time and enjoy the leftovers throughout the week.

Ingredients and substitutions

• Chicken breasts – boneless skinless chicken thighs would also work.
• Fresh salsa – use jarred or homemade salsa instead.
• Garlic – jarred minced or garlic powder will work in a pinch.
• Chili powder – you can use a blend of cayenne, paprika or taco seasoning instead. You could also try using homemade fajita seasoning and omit the cumin.
• Cumin – coriander is the best substitute here, or you can just add more chili powder.
• Yellow onion – red onion, white onion or shallots can be used too.
• Bell peppers – use any colour combination like yellow, red, orange and/or green bell pepper.

Optional toppings

• Grated cheddar cheese – Monterey Jack or a Tex Mex blend would also work.
• Chopped cilantro – leave this off if you’re not a fan of cilantro.
• Corn tortillas – flour tortillas can be used instead.

How to make fajitas in the crockpot

Step 1: Prep all your ingredients.

This makes it easier to add to the crockpot all at once.

Step 2: Add the chicken and spices to the crockpot.

Add the chicken, salsa, garlic and spices.

Step 3: Cook the chicken.

Cook the chicken on high for 4 hours or on low for 8 hours.

Step 4: Add the veggies.

Remove the chicken and add in the onions and peppers.

Step 5: Shred the chicken.

While the peppers and onions cook, shred the chicken.

Step 6: Add everything back to the pot.

Mix together the chicken, peppers and onions. Serve in corn tortillas with cheese and cilantro.

Frequently asked questions

Can I use frozen chicken in the crockpot?

I'd recommend thawing the chicken before cooking in the slow cooker to ensure it reaches a safe internal temperature evenly.

How do I prevent the vegetables from becoming too soft?

For crisper veggies, add your bell peppers later in the cooking process, about 15-30 minutes before serving.

Can I cook on high to reduce cooking time?

Yes, you can cook on high for 3-4 hours instead of low for 6-8 hours, but make sure to monitor it to prevent overcooking.

What to serve with chicken fajitas

Here are some ideas on what to serve with these slow cooker chicken fajitas:

• With tortillas and all the fixings like guacamole, pico de gallo, cheese, cilantro and fresh lime wedges
• Over Mexican rice with all your favourite toppings or cauliflower rice for a low-carb option
• With a side of cowboy caviar or refried beans
• Over cooked pasta like this chicken fajita pasta recipe

How to store and reheat

Make-ahead: Prep all ingredients in the slow cooker insert the night before, then store in the fridge until ready to cook.

Store: Keep leftovers in an airtight container in the fridge for up to 4 days.

Reheat: Warm in a skillet over medium heat for 5 minutes or microwave in 30-second intervals until heated through.

Freeze & reheat from frozen: Freeze cooked fajita filling in a freezer-safe container for up to 2 months. Thaw overnight in the fridge, then reheat on the stovetop or in the microwave.

Meal prep tools

• Here's the slow cooker I use.
• Grab some glass meal prep bowls if you plan on making crockpot chicken fajitas as your weekly lunches.
• I get all my free-range chicken from Butcher Box, conveniently delivered to me frozen.