Skip to Content

Irresistible Chicken Fajita Casserole: 1 Pan Dinner

Ugh, weeknights. Am I right? Between soccer practice, that never-ending to-do list, and just trying to unwind, the last thing I want to do is spend hours in the kitchen. That’s why I’ve become obsessed with finding those magical dishes that are super satisfying and ridiculously easy. This Irresistible Chicken Fajita Casserole Recipe For Dinner? It’s basically my weeknight savior! I remember the first time I threw this together. I was staring into the fridge, completely uninspired, and just started tossing things in a pan. Turns out, pure genius happens when you’re that desperate!

Why You’ll Love This Irresistible Chicken Fajita Casserole Recipe For Dinner

Seriously, this casserole is a lifesaver for busy nights. You’ll wonder why you ever bothered with takeout!

  • Super Quick & Easy: Throw it all together in one pan, minimal fuss!
  • Bursting with Flavor: All those yummy fajita spices, peppers, and onions come together perfectly.
  • Family Friendly: Even the pickiest eaters usually gobble this one up.
  • Perfect for Meal Prep: Makes great leftovers, which is a total win for lunch the next day.

Gather Your Ingredients for Irresistible Chicken Fajita Casserole

Alright, let’s get our mise en place ready! This is where the magic really starts to happen. Don’t worry, it’s all super simple stuff you probably already have or can grab easily.

Here’s what you’ll need:

  • 1 pound boneless, skinless chicken breasts, cut into nice, bite-sized strips
  • 1 tablespoon good old olive oil
  • 1 big onion, sliced up so it gets nice and tender
  • 2 bell peppers (use whatever colors make you happy – I love a mix!), sliced
  • 1 packet of your favorite fajita seasoning mix (don’t be shy with it!)
  • 1 (15 ounce) can black beans, rinsed well and drained (gotta get rid of that canning liquid!)
  • 1 (10 ounce) can diced tomatoes with green chilies, undrained (we want all that flavorful juice!), like Ro*tel if you can find it!
  • 1 cup shredded cheddar cheese (or Monterey Jack, or a mix – your call!)
  • And for the grand finale, some optional toppings like a dollop of sour cream, your favorite salsa, or some creamy avocado slices. Yum!

Step-by-Step Guide to Making Your Irresistible Chicken Fajita Casserole

Okay, now for the fun part – actually making this dish! It’s so straightforward, you’ll be amazed at how quickly it comes together. Honestly, the hardest part is waiting for it to bake because it smells SO good!

Preheating and Initial Searing for the Fajita Casserole

First things first, let’s get that oven happy! Preheat it to 375°F (190°C). While that’s warming up, grab a big skillet and add your olive oil. Get it nice and hot over medium-high heat – we want a good sizzle! Toss in those chicken strips and cook them until they’re beautifully browned on all sides. Don’t worry about cooking them all the way through just yet; we’re just giving them a head start. Scoop them out and set them aside for a moment.

Sautéing the Vegetables for Optimal Flavor

In that same skillet (don’t you love a one-pan wonder?), toss in your sliced onions and bell peppers. Let them cook, stirring occasionally, until they start to soften up and get a little bit tender – probably about 5 to 7 minutes. You want them to have a nice bite still, not mushy! If your pan looks a little dry, you can always add another tiny drizzle of oil, but try not to crowd them in there; give them space to get happy.

Combining Flavors and Returning Chicken to the Skillet

Now, sprinkle that fajita seasoning right over the veggies. Give it a good stir to coat everything. Then, tumble in the rinsed and drained black beans and the undrained can of diced tomatoes with green chilies. Oh yeah, we’re building flavor here! Stir it all together, letting it simmer for just a minute to meld those amazing spices. Pop that browned chicken back into the skillet and give everything one last, loving stir to make sure it’s all combined perfectly.

Assembling and Baking Your Irresistible Chicken Fajita Casserole

Time to get this into its final home! Pour that glorious mixture into a 9×13 inch baking dish. Spread it out evenly. Now, sprinkle that shredded cheddar cheese all over the top. Make sure it gets into all the nooks and crannies! Pop it into your preheated oven and let it bake for about 20 to 25 minutes. You’re looking for that cheese to be all melted, bubbly, and maybe even starting to get a little golden around the edges. It smells incredible at this point, trust me! I learned from a friend making a similar Mexican-inspired dish that a little patience during baking really pays off for flavor development.

Tips for the Best Irresistible Chicken Fajita Casserole

Okay, so you’ve got the basic recipe down, but let me tell you, a few little tricks can really push this casserole from ‘good’ to ‘OMG, I need another slice right now!’ It’s all about those little touches that make a big difference. I learned these years ago, and now I can’t imagine making it any other way. It’s like adding a secret handshake to your cooking skills!

Close-up of a bubbling Irresistible Chicken Fajita Casserole topped with melted cheese and visible chunks of chicken and peppers.

Don’t be afraid to mix up your cheese blend! A little Monterey Jack or pepper jack can add a nice punch. And if you happen to have some leftover rotisserie chicken lying around, that’s a total shortcut for ridiculously tender, pre-cooked chicken. Seriously, it’s a game-changer when you’re in a rush! You can even check out other speedy pasta dishes, like this awesome chicken bacon ranch pasta, for more weeknight inspiration.

Ingredient Notes and Substitutions for Your Fajita Casserole

Okay, let’s talk ingredients because sometimes you gotta get a little creative in the kitchen, right? My absolute fave for this casserole uses those juicy chicken breasts, but if you’re short on time or just want a different vibe, shredded rotisserie chicken is your best friend. It’s already cooked and packed with flavor, honestly a total lifesaver on those super busy nights. And while cheddar is classic and delicious, don’t hesitate to mix in some Monterey Jack for creaminess or pepper jack if you’re feeling a little spicy! It really makes the flavors pop.

Serving Suggestions for Your Chicken Fajita Casserole

Now, let’s talk about what to serve alongside this amazing casserole! You’ve got your cheesy, flavorful main dish, so let’s complement it. My go-to is always a big scoop of sour cream – it just cools everything down so nicely. And of course, you can’t forget the salsa! A fresh pico de gallo or a chunky roasted tomato salsa is divine. Don’t skimp on the avocado either; those creamy bites are pure heaven with fajita flavors. If you’re looking for a side, try this fantastic Tex-Mex sweet potato hash – it’s a flavor explosion!

Close-up of a bubbling Irresistible Chicken Fajita Casserole topped with melted cheese and red peppers.

Storage and Reheating Instructions

Got leftovers? Lucky you! This casserole tastes even better the next day. Just pop any extra into an airtight container and store it in the fridge for up to 3 days. When you’re ready for round two, just spoon some into a microwave-safe dish and reheat gently until it’s wonderfully warm and bubbly again. You can also pop it into a 350°F (175°C) oven for about 15-20 minutes if you prefer that oven-baked goodness!

Frequently Asked Questions about Irresistible Chicken Fajita Casserole

Got questions? I’ve got answers! This casserole is pretty straightforward, but sometimes you just need a little clarification or want to know how to tweak things. Let’s dive in!

Can I make this Irresistible Chicken Fajita Casserole ahead of time?

Oh, absolutely! This is one of my favorite make-ahead meals. You can totally assemble the whole thing, cover it tightly, and keep it in the fridge for up to 24 hours before you plan to bake it. Just add the cheese right before it goes into the oven. Sometimes, if I’m really planning ahead, I’ll even freeze the unbaked casserole. Just thaw it in the fridge overnight and then bake as usual, though it might need an extra 5-10 minutes in the oven.

What are good vegetarian substitutions for this recipe?

Totally! If you’re going meatless, you can swap the chicken for black beans or even pinto beans – just add an extra can! Another fantastic option is to use firm or extra-firm tofu, pressed and cubed, or even some hearty mushrooms. Sauté them up just like you would the chicken with the fajita seasoning. You get all those awesome flavors without the meat!

How can I make this recipe spicier?

If you like things with a kick, you’ve come to the right place! The diced tomatoes with green chilies already add a little something, but to really turn up the heat, toss in a minced jalapeño (seeds and all for extra fire!) when you’re sautéing the onions and peppers. You could also add a pinch or two of cayenne pepper to the seasoning mix, or even a dash of your favorite hot sauce right before serving. Go wild!

A close-up of a baked Irresistible Chicken Fajita Casserole topped with melted cheese and visible pieces of red and green peppers.

Nutritional Information

Just a heads-up, this info is an estimate because, well, kitchens are forgiving places and we all use slightly different amounts of things! Based on the ingredients, one serving of this delicious casserole comes in around 350 calories. You’re looking at about 15g of fat, with 6g being saturated, and a solid 35g of protein to keep you full. Plus, there are roughly 20g of carbs and 5g of fiber. Pretty great for a weeknight meal, right?

Share Your Irresistible Chicken Fajita Casserole Experience!

So, what did you think? Did you whip up this amazing casserole? I’d LOVE to hear all about it! Drop a comment below, give it a star rating, or even better, share a pic of your creation on social media – tag me! And if you tweaked it or made it your own, I’m always looking for new ideas. If you have any questions, don’t hesitate to reach out via the contact page. Happy cooking!

Print
clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon

Irresistible Chicken Fajita Casserole


  • Author: recipebychefs.com
  • Total Time: 45 min
  • Yield: 6 servings 1x
  • Diet: Vegetarian

Description

A simple and delicious chicken fajita casserole perfect for a weeknight dinner.


Ingredients

Scale
  • 1 pound boneless, skinless chicken breasts, cut into strips
  • 1 tablespoon olive oil
  • 1 large onion, sliced
  • 2 bell peppers (any color), sliced
  • 1 packet fajita seasoning
  • 1 (15 ounce) can black beans, rinsed and drained
  • 1 (10 ounce) can diced tomatoes with green chilies, undrained
  • 1 cup shredded cheddar cheese
  • Optional toppings: sour cream, salsa, avocado

Instructions

  1. Preheat your oven to 375°F (190°C).
  2. In a large skillet, heat olive oil over medium-high heat. Add chicken strips and cook until browned. Remove chicken from skillet and set aside.
  3. Add onion and bell peppers to the same skillet. Cook until softened, about 5-7 minutes.
  4. Stir in the fajita seasoning, black beans, and diced tomatoes with green chilies. Bring to a simmer.
  5. Return the cooked chicken to the skillet. Stir to combine.
  6. Pour the mixture into a 9×13 inch baking dish.
  7. Sprinkle shredded cheddar cheese evenly over the top.
  8. Bake for 20-25 minutes, or until the cheese is melted and bubbly.
  9. Serve hot with your favorite toppings.

Notes

  • For a spicier casserole, add a pinch of cayenne pepper or a diced jalapeño to the vegetable mixture.
  • You can substitute shredded rotisserie chicken for raw chicken to save time.
  • Prep Time: 15 min
  • Cook Time: 30 min
  • Category: Dinner
  • Method: Baking
  • Cuisine: Mexican-inspired

Nutrition

  • Serving Size: 1 serving
  • Calories: 350
  • Sugar: 5g
  • Sodium: 700mg
  • Fat: 15g
  • Saturated Fat: 6g
  • Unsaturated Fat: 9g
  • Trans Fat: 0g
  • Carbohydrates: 20g
  • Fiber: 5g
  • Protein: 35g
  • Cholesterol: 90mg

Keywords: chicken fajita casserole, easy dinner, weeknight meal, Mexican casserole, Tex-Mex

Recipe rating