High Protein Southwest Chicken Casserole

on Sep 29, 2025, Updated Apr 11, 2026

Cals: 376 Protein: 37 Carbs: 34 Fat: 10

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Bold southwest flavors meet tender chicken and rice in this easy-to-make casserole dish. It’s high in protein, gluten-free, and perfect for meal prepping.

Do you have a busy weeknight and you need something quick, delicious, and healthy?

I’ve been there.

But, don’t worry. I have your back!

This high-protein Southwest chicken casserole recipe is perfect when you want a pop of flavor in a healthy way.

And, if you don’t believe me, just ask my family. It’s their all-time favorite recipe.

So, what makes this dish so special?

Every bite you take delivers smoky paprika, tangy salsa, and melted cheese. And, it serves 6 people, making it a great option when you need to meal prep or when you have to feed a large group of people.

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With 35 grams of protein per serving, it’s going to help you stay full for a long time, helping you stay on top of your health goals.

And, since it’s a casserole dish, you just need to assemble the ingredients and let the oven do the rest.

More time for you to spend with your family!

Ingredients and Substitutes

Basmati rice, uncooked (1 cup) – Replace with quinoa, brown rice, or cauliflower rice for a low-carb option.

Yellow onion, finely chopped (1/2 medium) – You can use white onion, red onion, or shallots for a different flavor profile.

Garlic, minced (2 cloves) – If you don’t have fresh garlic, you can use garlic powder or pre-minced garlic.

Chicken broth (1 cup) – Swap with vegetable broth or beef broth.

Chicken breasts, skinless & boneless, cut into 1-inch cubes (1.5 lbs) – Substitute with chicken thighs, turkey breasts, or a plant-based protein like tofu or seitan.

Black beans, rinsed and drained (1 14 oz can) – I’ve also used pinto beans or kidney beans.

Corn, drained (1 12 oz can) – You can use fresh corn from the cob or frozen corn kernels if you don’t have canned corn.

Salsa (16 oz jar) – Replace with diced tomatoes mixed with green chilies or homemade pico de gallo.

Chili powder (1/2 tsp) – Replace with chipotle powder or cayenne pepper.

Paprika (1/2 tsp) – You can also use smoked paprika to add a bit of smokiness or cayenne pepper.

Black pepper (1/2 tsp)

Cheddar cheese, shredded (1 cup) – Swap with Monterey Jack, pepper jack, or a dairy-free option.

How to Make High Protein Southwest Chicken Casserole

Step 1. Preheat your oven to 360°F and prepare a 9×13 casserole dish by greasing it with oil.

Cover the bottom of the casserole dish with the basmati rice, chopped onion, and minced garlic.

Step 2. Add the chicken broth and give the ingredients a good stir.

Step 3. Add the diced chicken breasts.

Step 4. Add the black beans and corn.

Step 5. In a small dish, combine the salsa, paprika, chili powder, and black pepper.

Step 6. Pour the salsa in the casserole dish.

Step 7. Grab a spatula and level out the ingredients. Then, sprinkle the shredded cheddar cheese.

Step 8. Cover the casserole dish with foil and place it in the oven. Bake for 45 minutes.

Remove the foil and cook for another 10 minutes to brown and melt the cheese. Then, take it out of the oven and enjoy.

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How I Would Modify This Recipe

Low-Carb Version: Replace the rice with cauliflower rice or diced zucchini. You can also double the cheese and add some sour cream once it’s cooked.
Add Other Toppings: You can add different toppings such as jalapeño slices, guacamole or avocado slices, sour cream, or crushed tortilla chips.
Make it Dairy–Free: You can use nutritional yeast or dairy-free cheese if you want to make a dairy-free version.

What I Would Serve with This High Protein Southwest Chicken Casserole

Green salad with a lime vinaigrette
Sliced cucumber with lime and salt
Cucumber and tomato salad
Warm tortillas
Chips and salsa (or guac)
Roasted bell peppers
Steamed broccoli with chili powder

My Tips & Tricks

Enhance the Flavor: Let the casserole rest 5 minutes before you serve it to allow the flavors to settle. You can add fresh cilantro and lime juice before serving it.
Prevent Any Sogginess: Drain the canned ingredients to prevent getting a soggy casserole.
Pat the Chicken Dry: Patting the chicken will allow the spices to adhere more easily, adding more flavor.

My Storage Tips

One of the best things about this recipe is that it’s a great option when you need to meal prep.

Store any leftovers in individual containers and keep them in the fridge for up to 4-5 days. And, if you want to keep them for longer, place them in the freezer for up to 3 months.

When you want to have them again, place them in the microwave in 90-second increments. But, I do recommend reheating it in the oven to get that delicious crispy cheese.