Fajita Chicken Casserole

Looking for an easy dinner that brings all the Tex-Mex flavor without the mess of multiple pans? This Fajita Chicken Casserole is the answer. Packed with seasoned chicken, bell peppers, onions, and gooey melted cheese, it’s a one-dish wonder that satisfies the whole table. Whether you’re low-carb, meal-prepping, or just craving something warm and cheesy, this recipe checks all the boxes.

Why You’ll Love This Fajita Chicken Casserole

• 🌟 One-pan, no-fuss dinner
• 🧀 Loaded with cheesy, creamy flavor
• 🌮 All your favorite fajita ingredients baked together
• ⏳ Great for meal prep or busy weeknights
• 🩺 Keto- and low-carb-friendly

This casserole is everything you love about sizzling fajitas—minus the skillet and table-side drama. Just prep, bake, and enjoy.

Ingredients You’ll Need

• Chicken: Boneless, skinless breasts or thighs
• Bell Peppers: Red, green, and yellow for color and crunch
• Onion: Sliced thin, preferably red or yellow
• Cream Cheese: Adds creamy texture and tang
• Shredded Cheese: Mexican blend, cheddar, or Monterey Jack
• Seasonings: Fajita seasoning, garlic powder, cumin, salt, pepper
• Olive Oil: For sautéing the veggies
• Optional: Jalapeños, diced tomatoes, or black beans for extra flavor

Pro tip: Use pre-cooked shredded rotisserie chicken to save time.

Fajita Chicken Casserole Recipe

Prep Time: 15 mins
Cook Time: 30 mins
Serves: 4–6

Ingredients:

• 1.5 lbs cooked chicken, shredded or cubed
• 2 bell peppers, sliced
• 1 medium onion, sliced
• 4 oz cream cheese, softened
• 1.5 cups shredded Mexican cheese blend
• 2 tbsp olive oil
• 1 tbsp fajita seasoning
• 1/2 tsp garlic powder
• 1/2 tsp cumin
• Salt and pepper to taste

Instructions:

1. Preheat oven to 375°F.
2. Sauté onions and peppers in olive oil until tender.
3. In a bowl, combine chicken, sautéed veggies, cream cheese, and seasonings.
4. Spread into greased baking dish and top with shredded cheese.
5. Bake 25–30 minutes until golden and bubbly.
6. Garnish and serve warm.

How to Make Fajita Chicken Casserole In Details

Step-by-Step Instructions

1. Preheat oven to 375°F.
2. Season the chicken with fajita seasoning, garlic powder, cumin, salt, and pepper.
3. Sauté bell peppers and onions in a bit of olive oil until just tender.
4. Combine chicken, veggies, and cream cheese in a large bowl and mix until creamy.
5. Spread mixture into a greased baking dish.
6. Top with shredded cheese and optional toppings.
7. Bake for 25–30 minutes, until hot and bubbly with a golden cheese top.
8. Garnish with fresh cilantro or sliced jalapeños and serve.

Tips for the Best Casserole

• Use pre-cooked chicken for an even quicker prep.
• Slice veggies evenly so they cook uniformly.
• Add spice with chili flakes or hot sauce in the mix.
• Bake uncovered for a bubbly, golden cheese topping.
• Let it rest 5 minutes before serving for easier scooping.

Variations & Substitutions

• Swap chicken for ground turkey or beef for a different twist.
• Add cauliflower rice for a low-carb filler.
• Toss in beans or corn for a Tex-Mex vibe.
• Use Greek yogurt in place of some cream cheese for a lighter version.

The best part? It’s super customizable based on what you have in your fridge.

What to Serve with Fajita Chicken Casserole

• A simple green salad
• Cilantro lime rice
• Low-carb tortillas or lettuce wraps
• Sliced avocado or guacamole

Whether you want to keep it light or load up on sides, this casserole plays well with just about anything.

Make-Ahead & Storage Tips

• Prep ahead: Assemble the dish up to 24 hours in advance and refrigerate.
• Store leftovers in an airtight container for 3–4 days.
• Freeze for up to 2 months. Thaw in the fridge overnight and reheat in the oven.

FAQs

Can I make this dairy-free? Yes, use dairy-free cream cheese and cheese alternatives.

Can I add rice to this casserole? Absolutely! Add cooked rice to the mixture before baking for a heartier version.

Is this keto-friendly? Yes, just skip any added beans or rice.

Final Thoughts

This Fajita Chicken Casserole is bold, flavorful, and crazy easy to throw together. It’s a weeknight lifesaver and a surefire crowd-pleaser. Whether you’re eating low-carb or just love the comfort of a cheesy, oven-baked meal, this casserole is a winner every time. Leftovers? Even better the next day.

 

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