This High-Protein Fajita Rice Bake packs bold fajita flavors into one cheesy casserole. Loaded with juicy chicken, bell peppers, and seasoned rice, it's a quick high-protein meal perfect for busy…
Ingredients
Instructions
Preheat your oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish with nonstick spray or a little olive oil. This ensures the rice doesn’t stick and makes cleanup effortless. While the oven heats, prepare all your ingredients: slice the onion and bell peppers into thin, even strips (about 1/4-inch thick) so they cook uniformly and soften beautifully. Mince the garlic finely. Cut the chicken breasts into bite-sized cubes, roughly 1-inch pieces, for quick, even cooking. Pat the chicken dry with paper towels to remove excess moisture—this helps achieve a nice golden sear rather than steaming.
Heat 1 tablespoon of olive oil in a large skillet or Dutch oven over medium-high heat. Once the oil shimmers, add the chicken pieces in a single layer (work in batches if needed to avoid overcrowding). Cook undisturbed for 3-4 minutes until the bottom is deeply golden brown. Flip and cook another 2-3 minutes until the chicken is cooked through and no longer pink in the center. The internal temperature should reach 165°F (74°C). Transfer the chicken to a plate and set aside. This browning step builds a fantastic savory flavor base for the casserole.
Reduce the heat to medium and add the remaining 1 tablespoon of olive oil to the same skillet. Add the sliced onion and bell peppers. Cook, stirring occasionally, for 5-6 minutes until they begin to soften and caramelize slightly. The edges should get a little charred for that authentic fajita taste. Add the minced garlic and cook for 30 seconds until fragrant—be careful not to burn it. This aromatic medley infuses the dish with deep, smoky-sweet flavor.
Sprinkle the fajita seasoning over the vegetables and stir to coat evenly. Allow the spices to toast for about 1 minute, stirring constantly, to bloom their flavors. Pour in the chicken broth and diced tomatoes with green chiles, scraping up any browned bits from the bottom of the pan (that’s pure flavor!). Bring the mixture to a simmer. Then stir in the uncooked rice, ensuring it’s evenly distributed. The rice will absorb all the seasoned liquid as it bakes, becoming tender and infused with fajita goodness.
Remove the skillet from heat. Gently fold in the cooked chicken and the reduced-fat sour cream until everything is well combined. The sour cream adds a creamy tang that balances the spices and keeps the casserole moist. Season with salt and black pepper to taste—remember the fajita seasoning and cheese add salt, so go easy. Transfer the entire mixture to the prepared baking dish and spread it into an even layer.
Sprinkle the shredded Mexican blend cheese and sharp cheddar evenly over the top. The combination of cheeses gives a creamy, gooey melt with a sharp finish. Bake uncovered for 20-25 minutes, or until the rice is tender and the cheese is bubbly and golden brown. If you want a deeper golden crust, switch to broil for the last 1-2 minutes, watching closely to prevent burning. Let the casserole rest for 5 minutes before serving—this allows the rice to absorb any remaining liquid and makes serving easier.
Garnish with fresh cilantro, lime wedges, and sliced avocado if desired. Scoop generous portions onto plates and enjoy the vibrant, hearty flavors. Leftovers keep well in the fridge for up to 4 days, making this an excellent meal prep option. To reheat, simply microwave individual portions or warm in a 350°F oven until heated through.
For best results
- For the best texture, use long-grain white rice like jasmine or basmati. These varieties hold their shape and stay fluffy after baking. Avoid short-grain rice (like sushi rice) as it can become too sticky and mushy. If you want to use brown rice, you'll need to adjust the liquid and cooking time—use 1 1/4 cups broth and bake for 45-50 minutes, checking for doneness.
- To save time on busy nights, prep the vegetables and chicken up to 2 days in advance. Store them separately in airtight containers in the fridge. You can also cook the chicken and vegetables, then assemble the casserole (without baking) and refrigerate for up to 24 hours. When ready to bake, add 5-10 minutes to the baking time since you're starting from cold.
- Searing the chicken is crucial—don't skip it. The Maillard reaction creates deep, savory flavor compounds that elevate the entire dish. If you're short on time, you can skip the sear and cook the raw chicken pieces directly in the skillet with the vegetables, but you'll lose some flavor depth. For maximum taste, always brown the chicken first.
- For a lower-fat version, substitute the sour cream with plain Greek yogurt (2% or full-fat works best to avoid curdling). You can also use part-skim mozzarella or a reduced-fat cheddar blend. The casserole will still be creamy and satisfying, with a significant calorie and fat reduction.
- If you like a spicy kick, add a diced jalapeño along with the bell peppers, or stir in 1/2 teaspoon of cayenne pepper with the fajita seasoning. For smoky heat, use chipotle powder or adobo sauce from canned chipotles. Adjust the heat level to your preference—this recipe is family-friendly as written.
- Make this casserole gluten-free by ensuring your fajita seasoning and chicken broth are certified gluten-free. Most store-bought seasonings are gluten-free, but always check labels. Serve with corn tortillas or tortilla chips for a crunchy contrast.
- To double the recipe for a crowd, use a 12×17-inch roasting pan and increase baking time by 10-15 minutes. Ensure the dish isn't too full to avoid overflow. You may need to cook the chicken and vegetables in batches to avoid overcrowding the skillet.
Variations
- Vegetarian Fajita Rice Bake: Omit the chicken and add 2 cans (15 oz each) of black beans or pinto beans, drained and rinsed. You can also add 1 cup of corn kernels (fresh or frozen). For extra protein, add 8 oz of crumbled queso fresco or extra cheese. The beans add fiber and plant-based protein, making this a hearty meatless meal.
- Shrimp Fajita Rice Bake: Replace chicken with 1.5 lbs of peeled and deveined shrimp. Sauté the shrimp for 2-3 minutes per side until pink and opaque, then set aside. Fold into the casserole just before baking. Be careful not to overcook the shrimp—they'll finish cooking in the oven. This variation is lower in calories and cooks faster.
- Steak Fajita Rice Bake: Use 1.5 lbs of flank steak or sirloin, thinly sliced against the grain. Sear in batches over high heat for 2-3 minutes per side for medium-rare. Slice into bite-sized strips and proceed as directed. Steak adds a rich, beefy flavor that pairs beautifully with the fajita spices.
- Low-Carb / Keto Fajita Casserole: Substitute the rice with 4 cups of cauliflower rice (fresh or frozen, thawed and squeezed dry). Reduce the chicken broth to 1/2 cup and bake for 20 minutes, covered, then uncover and bake 10 minutes more. The cauliflower absorbs the flavors while keeping carbs low. Add extra cheese for fat and richness.
- Spicy Chipotle Fajita Bake: Add 1-2 chipotle peppers in adobo sauce (minced) along with the garlic. This adds a deep, smoky heat. You can also stir in 1 tablespoon of adobo sauce. For extra smokiness, use smoked paprika in the seasoning blend. Serve with cooling crema or avocado to balance the heat.
- Cheesy Southwest Fajita Bake: Stir in 1 cup of frozen corn and 1 can (15 oz) of black beans (drained) along with the chicken. Use pepper jack cheese instead of cheddar for a spicy, creamy topping. This version is more filling and adds extra fiber and color.
Nutrition
- Calories485 kcal
- Total Fat18g
- Saturated Fat8g
- Cholesterol110mg
- Sodium720mg
- Total Carbohydrates42g
- Dietary Fiber3g
- Sugars6g
- Protein38g