Easy Crockpot Fajitas

Craving a bold, crowd-pleasing Tex-Mex dinner but short on time? Let me introduce you to the very best Easy Crockpot Fajitas!

These fajitas are a dream—a vibrant mix of tender, juicy chicken, colorful bell peppers, and zesty onions, all bathed in a flavorful chili-lime seasoning. And the best part? Your slow cooker does all the hard work!

Whether you’re feeding a hungry family on a busy weeknight or meal-prepping for the week ahead, this recipe is your delicious, no-fuss answer. Minimal chopping, easy cleanup, and a festive meal everyone will rave about—what’s not to love?

This is a longtime family favorite in my house, inspired by restaurant fajitas but so much easier (and healthier). Get ready to make it your new go-to!

Why You'll Love This Recipe

• It’s almost entirely hands-off. Toss everything in the crockpot and let dinner make itself—so easy!
• Super flavorful and juicy. Slow cooking infuses every bite with bold Tex-Mex flavors.
• Perfect for busy weeknights. Minimal prep, maximum reward, and easy clean-up.
• Customizable for all diets. Easily make it gluten-free, low-carb, or vegetarian to fit your needs.

Key Ingredients for Easy Crockpot Fajitas

See recipe card below for full list of measurements, ingredients, and instructions.

Boneless Skinless Chicken Breast

This is the heart of your fajitas, providing lean protein and a neutral base that soaks up all the delicious spices. For the juiciest results, slice your chicken into thick strips before adding to the crockpot. If you prefer dark meat, boneless, skinless thighs work beautifully too, adding extra richness and tenderness.

Bell Peppers

Vibrant bell peppers bring a sweet crunch and eye-catching color to every fajita. A mix of red, yellow, and green peppers adds more flavor and visual appeal, but use whatever you have on hand! Slice them into thick strips to prevent overcooking in the slow cooker.

Onion

Sliced onion brings depth and a hint of sweetness, balancing out the spices. Yellow or white onions are great, but red onion adds an extra pop of color and a mild bite.

Fajita Seasoning

A bold fajita seasoning blend is key for that authentic flavor. You can use your favorite pre-made mix, or quickly throw together chili powder, cumin, paprika, garlic powder, and a squeeze of lime. Adjust the heat to your liking by adding some cayenne or smoked paprika!

Fresh Lime Juice

A splash of lime at the end wakes up all the flavors and infuses the chicken and veggies with fresh, zingy notes. If you’re out of fresh limes, bottled lime juice or even lemon juice will work in a pinch.

Instructions for Easy Crockpot Fajitas

See recipe card below for full list of measurements, ingredients, and instructions.

Prep the Veggies and Chicken

Slice your bell peppers and onion into thick strips. Cut the chicken breasts into even, long strips—this helps them cook evenly and stay juicy!

Layer in the Crockpot

Drizzle the olive oil on the bottom of your slow cooker. Add half the peppers and onions, then lay the chicken strips on top. Sprinkle over the fajita seasoning, salt, and pepper. Top with the remaining peppers and onions, then pour in the drained diced tomatoes.

Cook Low and Slow

Cover and cook on low for 4 to 5 hours, or on high for 2 to 3 hours. You want the chicken to be tender but not falling apart, and the veggies soft but still bright.

Finish and Serve

Squeeze fresh lime juice over everything and quickly toss to combine. Taste and adjust seasoning if needed. Serve hot on warm flour tortillas with your favorite toppings!

Recipe Variations

Try Steak or Shrimp

Swap out chicken for thinly sliced skirt steak or peeled shrimp! If using shrimp, add them in the last 45 minutes of cooking to keep them perfectly tender.

Make It Vegetarian

Leave out the chicken and double the peppers. Add sliced portobello mushrooms or drained canned black beans for hearty, satisfying, plant-based fajitas.

Low-Carb Option

Ditch the tortillas and serve your fajita mixture over a bed of cauliflower rice or leafy greens for a gluten-free, carb-conscious meal.

Spice It Up

Love heat? Add a sliced jalapeño to the crockpot before cooking, or stir in chipotle powder for a smoky finish.

Homemade Fajita Seasoning

Mix together chili powder, cumin, smoked paprika, garlic powder, and a pinch of cayenne to control the salt and spice levels to your taste.

Serving Suggestions

Pair your Easy Crockpot Fajitas with Mexican rice, black or pinto beans, or a crisp side salad for a complete meal. For toppings, don’t forget fresh cilantro, tangy salsa, creamy avocado or guacamole, shredded cheese, and a dollop of sour cream. Squeeze more lime on top for extra tang!

Storage and Reheating

Store leftovers in an airtight container in the fridge for up to 4 days. Reheat in the microwave or in a skillet on the stove until hot. To freeze, cool completely and pack into freezer-safe bags for up to 2 months. Thaw overnight in the fridge before reheating for best texture.

Frequently Asked Questions About Easy Crockpot Fajitas (FAQ)

Q: Can I use frozen chicken in this recipe?
A: For food safety and best texture, it’s best to use thawed chicken. If using frozen, add an extra hour to the cooking time and check doneness before serving.

Q: What’s the best way to avoid soggy veggies?
A: Slice your peppers into thick strips and don’t overcook. If you love crisper veggies, add half the peppers in the last hour of cooking.

Q: Can I make this recipe ahead of time?
A: Absolutely! Assemble all the ingredients in your crockpot insert the night before, cover and refrigerate, then start cooking the next day.

These Easy Crockpot Fajitas are all about maximum flavor with minimum effort! Once you try this set-it-and-forget-it meal, it’s sure to become a staple at your table. Give it a whirl and let me know how you liked it—be sure to leave a comment or rating below!