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Chicken Fajita Skillet Casserole: Easy One-Pan Tex-Mex Dinner

This Chicken Fajita Skillet Casserole is a cheesy, one-pan Tex-Mex dish that combines tender seasoned chicken, sautéed bell peppers, caramelized onions, and gooey melted cheese. It’s an easy, low-carb, high-protein meal that’s perfect for busy weeknights and meal prep. Serve it on its own, over rice, or with tortilla chips for a comforting, flavor-packed dinner!

  • Total Time: 30 minutes
  • Yield: 4 servings 1x

Ingredients

Scale
  • 1 lb boneless, skinless chicken breasts or thighs (sliced into strips)
  • 1 tbsp olive oil
  • 1 red bell pepper, sliced
  • 1 yellow bell pepper, sliced
  • 1 green bell pepper, sliced
  • 1 small onion, sliced
  • 1 tsp chili powder
  • 1 tsp cumin
  • ½ tsp smoked paprika
  • ½ tsp garlic powder
  • ½ tsp salt & black pepper
  • ½ cup sour cream or Greek yogurt
  • 1 cup shredded cheddar or Mexican blend cheese
  • Juice of 1 lime
  • Fresh cilantro, chopped (for garnish)

💡 Pro Tip: Add sliced jalapeños or a dash of cayenne pepper for extra heat!

Instructions

  1. Sauté the Chicken & Vegetables

    • Heat olive oil in a large oven-safe skillet over medium-high heat.
    • Add chicken strips, season with chili powder, cumin, smoked paprika, garlic powder, salt, and black pepper, and cook until golden brown.
    • Remove chicken and set aside.
  2. Cook the Fajita Vegetables

    • In the same skillet, add sliced bell peppers and onions.
    • Sauté for 3–5 minutes until softened but still slightly crisp.
  3. Combine & Add Creamy Base

    • Return the cooked chicken to the skillet.
    • Stir in sour cream or Greek yogurt until evenly coated.
  4. Add Cheese & Bake

    • Sprinkle shredded cheese evenly over the top.
    • Transfer the skillet to the oven and bake at 375°F (190°C) for 10 minutes, or until the cheese is melted and bubbly.
  5. Garnish & Serve

    • Remove from the oven, squeeze fresh lime juice over the top, and garnish with chopped cilantro.
    • Serve on its own, over rice, or with tortilla chips.

💡 Serving Tip: Top with avocado slices, salsa, or a drizzle of hot sauce for extra flavor!

  • Author: [email protected]
  • Prep Time: 10 minutes
  • Cook Time: 20 minutes
  • Category: Main Course
  • Method: Stovetop+Oven
  • Cuisine: Tex-Mex
  • Diet: Low Calorie