Layered Mexican Casserole with Chicken and Cauliflower Rice
This Layered Mexican Casserole with Chicken and Cauliflower Rice is a weeknight dinner winner: comforting, saucy, and cheesy without relying on traditional rice. It layers savory chicken, bright green chiles, sautéed vegetables, creamy sauce, and golden melted cheese over a cauliflower rice base for a lighter take on a classic casserole. The flavors are bold—cumin, green chiles, and a touch of heat from green Tabasco—while a simple sour cream mixture keeps every bite rich and silky. It’s set-and-bake friendly yet full of texture and color, and it reheats beautifully for easy lunches.
Why you’ll love this casserole
- Cauliflower rice keeps the dish lighter but still hearty and filling.
- Simple stovetop prep and an oven finish make this approachable for any cook.
- Made with pantry-friendly ingredients and leftover cooked chicken, it’s practical and quick.
- Bright, layered presentation—cheesy top, saucy middle, and vegetables throughout—means every serving is visually appealing.
Ingredients
- 3 cups frozen cauliflower rice (see notes)
- one 15 oz. can Hatch Green Chile Enchilada Sauce
- 1 medium onion
- 1 green bell pepper
- 1 T olive oil
- 1 T ground cumin (see notes)
- one 4 oz. can diced green chiles (see notes)
- 1 T Green Tabasco Sauce (optional)
- 3/4 cup sour cream
- 2 cups diced cooked chicken
- 1/4 cup sliced green onion
- 2 cups grated Mexican Cheese Blend
Notes and ingredient tips
Frozen cauliflower rice: Use plain frozen cauliflower rice without added sauces or seasonings. Thaw slightly or follow the recipe straight from frozen in the skillet—just reduce excess moisture as directed.
Ground cumin: If your cumin is very old it can taste flat. Freshly toasted and ground cumin will give the best flavor if you have it available.
4 oz. can diced green chiles: These add mild tang and a gentle heat. If you prefer more kick, keep the green Tabasco Sauce and add to taste.
Chicken: Use cooked, diced chicken. Rotisserie-style cooked chicken or leftover roast chicken work great. Ensure any purchased cooked chicken was prepared according to your dietary needs.
Equipment
- Large skillet (10–12 inches) with lid
- 9×9-inch or similar baking dish
- Mixing bowl and wooden spoon or spatula
- Measuring cups and spoons
Step-by-step instructions
Follow these steps in order for best results. The directions have been rewritten into clear, actionable steps while keeping ingredient amounts unchanged.
- Preheat your oven to 375°F (190°C). Lightly grease a 9×9-inch baking dish and set it aside.
- Prepare the vegetables: Peel and dice the 1 medium onion. Core, seed, and dice the 1 green bell pepper into small pieces so they cook evenly.
- Heat 1 T olive oil in a large skillet over medium heat. Once the oil shimmers, add the diced onion and green bell pepper. Sauté, stirring frequently, until the onion becomes translucent and the pepper softens, about 5–7 minutes.
- Add the 3 cups frozen cauliflower rice to the skillet with the softened vegetables. Stir to combine. Continue cooking over medium heat, stirring occasionally, until most of the cauliflower’s moisture has evaporated and the rice is warmed through, another 6–8 minutes. If the mixture releases a lot of water, keep the heat at medium and cook a little longer until it’s mostly dry—this helps prevent a watery casserole.
- Push the vegetable and cauliflower mixture to the sides of the skillet. Add 1 T ground cumin into the center and let it toast for 20–30 seconds in the hot pan to bloom the aroma, then stir it through the vegetables so the flavors distribute evenly.
- Pour in one 15 oz. can Hatch Green Chile Enchilada Sauce and one 4 oz. can diced green chiles. Stir to coat the cauliflower and vegetables evenly. If you want a touch of heat, stir in 1 T Green Tabasco Sauce now; otherwise skip this step. Simmer the mixture gently for 2–3 minutes to allow the sauce to warm and meld with the ingredients.
- In a separate bowl, combine 3/4 cup sour cream with the 2 cups diced cooked chicken and 1/4 cup sliced green onion. Stir until the chicken is evenly coated in the sour cream. This creates a creamy layer that will sit between the cauliflower base and the cheese.
- Assemble the casserole: Spread the cauliflower, vegetable, and enchilada sauce mixture in an even layer in the prepared baking dish. Use the back of a spoon or spatula to flatten and distribute it uniformly.
- Spoon the chicken and sour cream mixture over the cauliflower layer, spreading it gently so it covers the cauliflower without mixing them together too much. The chicken layer should form a distinct middle layer.
- Sprinkle 2 cups grated Mexican Cheese Blend evenly across the top of the casserole. Aim for full coverage so the cheese melts into a bubbly, golden layer.
- Place the baking dish on a middle rack in the preheated oven and bake for 20–25 minutes, or until the cheese is fully melted and begins to brown around the edges. If you prefer a deeper golden top, switch to the oven’s broiler for the final 1–2 minutes—watch carefully to avoid burning.
- Remove the casserole from the oven and let it rest for 5 minutes. This short rest helps the layers set slightly, making it easier to slice and serve.
- Garnish with any extra sliced green onion if desired, then cut into squares and serve warm.
Serving suggestions
This casserole is satisfying on its own, but you can serve it with simple, fresh accompaniments to round out the meal. A crisp green salad with lime vinaigrette, a side of oven-roasted corn, or a scoop of avocado slices complement the dish well. For added brightness, squeeze a little fresh lime juice on each portion or scatter chopped cilantro across the top if you enjoy the herb’s flavor.
Make-ahead and storage
- To prepare ahead: Assemble the casserole up to the point of baking, cover tightly with foil, and refrigerate for up to 24 hours. Remove from the fridge and bake as directed, adding a few extra minutes to the bake time if still chilled.
- Leftovers: Store cooled leftovers in an airtight container in the refrigerator for up to 3 days. Reheat single servings in the microwave or warm larger portions in a 350°F (175°C) oven until heated through.
- Freezing: You can freeze the assembled but unbaked casserole (tightly wrapped) for up to 2 months. Thaw overnight in the fridge before baking and add 10–15 minutes to the baking time if still cold.
Flavor variations and swaps
- More vegetables: Add a cup of frozen corn or a diced poblano pepper with the onion and bell pepper for extra texture and sweetness.
- Spice level: Omit the green Tabasco Sauce for milder flavor or add extra diced chiles for more heat. A pinch of smoked paprika can also add depth.
- Cheese options: If you can’t find a Mexican cheese blend, use a mix of Monterey Jack and mild cheddar for similar meltability and flavor.
- Protein swaps: Substitute the diced cooked chicken with shredded turkey or cooked chickpeas for a plant-forward twist.
Nutrition pointers
By using cauliflower rice as the base, this casserole lowers carbohydrate density while still delivering plenty of protein from the chicken and satisfying creaminess from the sour cream and cheese. To reduce saturated fat, choose a lower-fat sour cream and a reduced-fat cheese blend, or scale back the cheese slightly. The dish packs flavor from spices and green chiles so you don’t have to rely on heavy seasoning.
Final notes
This Layered Mexican Casserole with Chicken and Cauliflower Rice is an excellent example of how a classic comfort-food format—layers of starch, protein, sauce, and cheese—can be reimagined to fit a lighter profile without sacrificing satisfaction. The simple steps let the bold ingredients shine: Hatch green chile enchilada sauce for smokiness, cumin for warmth, and the interplay of creamy and melty textures in every forkful. Whether you’re making it for a family dinner or prepping a weeknight meal, it’s straightforward, flavorful, and reliably delicious.
Enjoy! And when you make this, note how the cauliflower base soaks up the enchilada sauce—it’s the secret to each layered bite tasting cohesive and comforting.
Layered Mexican Casserole with Chicken and Cauliflower Rice
Ingredients
Equipment
Method
- Preheat the oven to 375°F (190°C) and spray a 9 x 12 x 3-inch casserole dish with nonstick spray.
- Place the 15-oz can of Hatch green chile enchilada sauce in a small saucepan and simmer until reduced to about 1 cup.
- While the sauce reduces, dice the onion and green bell pepper and slice the green onions; cut cooked chicken into small dice.
- Heat 1 tablespoon olive oil in a large frying pan over medium-high heat. Add the diced onion and green pepper and cook until they begin to brown, about 5 minutes.
- Stir in 1 tablespoon ground cumin and cook 1–2 minutes to toast the spice, then add the frozen cauliflower rice and cook over high heat until heated through and any excess liquid has evaporated, about 4 minutes.
- When the enchilada sauce is reduced to 1 cup, transfer it to a mixing bowl and stir in the drained diced green chiles; taste and add 1 tablespoon Green Tabasco Sauce if using.
- Let the sauce mixture cool until warm (not hot), then stir in 3/4 cup sour cream, the sliced green onions, and the diced cooked chicken until combined.
- Assemble the casserole: spread half of the cauliflower rice mixture in the bottom of the prepared dish, spoon half of the chicken/sour cream mixture over it, and sprinkle with half of the grated cheese.
- Repeat the layers with the remaining cauliflower rice mixture, chicken mixture, and the remaining cheese.
- Bake uncovered for 30–35 minutes, until the casserole is bubbling and the top is nicely browned.
- Let the casserole rest 5–10 minutes before cutting and serving.
Notes
- Use thawed cauliflower rice for even cooking.
- Rotisserie chicken is a quick option.
- Adjust Tabasco to taste or omit for milder heat.
- Reduce sauce slowly to avoid burning.
