Slow Cooker Chicken Fajitas

It’s usually Taco Tuesday here in Our Little House in the Country… but this week, I switched things up a little and made these delicious slow cooker chicken fajitas instead.

This is one of those recipes that I come back to again and again — not just because it’s full of flavour, but because it’s so easy to throw together in the morning and forget about until dinnertime. You just slice up a few peppers and onions, place them in the slow cooker with chicken breasts, and pour over a quick homemade fajita-style sauce made with passata, lime juice, and a handful of pantry spices.

Leave it to bubble away gently on low for five hours, and by the evening, you’ve got tender, juicy, fall-apart chicken packed with flavour. We usually serve it with grated cheese, guacamole, spicy tortilla chips, salsa, and warm flour tortillas — and we use zero percent fat Greek yogurt instead of sour cream.

It’s an ideal slow cooker meal for busy weekdays, and leftovers work beautifully too — think burrito bowls, quesadillas, or wraps the next day.

You’ll find the full, printable recipe just below. Let me know if you try it!

Our Little House in the Country

Slow Cooker Chicken Fajitas

These slow cooker chicken fajitas are the ultimate fuss-free dinner. Juicy, tender chicken breasts are cooked low and slow with peppers, onions, and a flavour-packed blend of spices. Just 10 minutes of prep in the morning – then serve with warm tortillas and your favourite toppings.

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Prep Time 10 minutes mins

Cook Time 5 hours hrs

Servings: 4

Course: Main Course

Cuisine: Comfort Food, Mexican, Tex Mex

Ingredients Equipment Method Notes

Ingredients

  

• – 3–4 boneless skinless chicken breasts approx. 600–700g
• – 2 bell peppers sliced (any colours)
• – 1 large onion sliced into thin strips
• – 1 tablespoon olive oil
• – Juice of 1 lime or 2 tbsp bottled lime juice
• – 1 tin chopped tomatoes 400g, or ½ cup passata
• – 1 tablespoon tomato purée

Spice Blend:

• – 2 teaspoons smoked paprika
• – 1½ teaspoons ground cumin
• – 1 teaspoon garlic powder
• – 1 teaspoon onion powder
• – 1 teaspoon dried oregano
• – ½ teaspoon mild chili powder or more to taste
• – ½ teaspoon salt
• – ¼ teaspoon black pepper
• – Optional: ½ teaspoon sugar or honey to balance acidity

Equipment

• Slow Cooker

Method

 

1. Add the sliced peppers and onion to the bottom of the slow cooker. Drizzle with olive oil.
2. Place the chicken breasts on top of the vegetables. You can slice them now or shred them later after cooking.
3. In a small bowl or jug, mix together the chopped tomatoes, tomato purée, lime juice, and all the spices. Stir well to combine.
4. Pour the sauce mixture evenly over the chicken and vegetables. No need to stir.
5. Cook on LOW for 5–6 hours or HIGH for 3–4 hours, until the chicken is cooked through and tender.
6. If using whole chicken breasts, remove and shred them with two forks. Return the shredded chicken to the slow cooker and stir to coat in the sauce.
7. Serve the fajita filling in warm tortillas with your favourite toppings such as grated cheese, sour cream, guacamole, salsa, or chopped fresh herbs.

Notes

• If the sauce is too runny at the end of cooking, leave the lid off for the final 20–30 minutes or stir in a small cornflour slurry to thicken.
• Want it spicier? Add cayenne or chopped jalapeños to the spice mix.
• Leftovers are delicious in burrito bowls, on nachos, or in quesadillas.
• This recipe works great for meal prep – store in the fridge for 3–4 days or freeze for up to 2 months.

I hope you enjoy this one as much as we do — it’s become a real midweek favourite in our house. If you give it a try, feel free to tag me over on Instagram @ourlittlehouseinthecountry — I’d love to see how it turns out for you.

And if you’re looking for more simple, slow cooker meals like this, keep an eye out — I’m sharing a few more of our family favourites over the coming weeks.

Chat soon,

Ciara x

Here’s a link to the slow cooker I use most often at home: My Slow Cooker on Amazon. Please note this is an affiliate link, which means I may earn a small commission if you choose to purchase through it — at no extra cost to you.