Mexican Chicken and Quinoa Casserole

Written by Loredana Arion in Healthy & Fit, Main Dish

Mexican-style chicken and quinoa casserole with kidney beans, corn and melted cheese

I made this Mexican chicken and quinoa casserole three times in a week and a half. Not because I couldn’t think of anything else to cook, but because I loved it so much that I just kept making it. 😁

It’s a delicious combination of quinoa, chicken, kidney beans, corn, and tomato sauce, all topped with a layer of melted cheese. And if you add some fresh avocado before serving, it’s even better!

What I love most about this recipe is that it’s filling, packed with protein and fiber, and incredibly easy to make. It’s perfect for lunch or dinner, especially when you’re craving something comforting and flavorful without spending hours in the kitchen.

Why You’ll Love This Mexican Chicken Quinoa Casserole

First of all, the combination of flavors and textures is so good! The quinoa soaks up the tomato sauce, the kidney beans and corn add texture, and the melted cheese brings everything together.

It’s also a really versatile recipe. You can easily swap ingredients based on what you already have in your kitchen or adjust the quantities to suit your taste.

Another thing I love is that you can make several portions at once. This chicken quinoa bake keeps well in the fridge and reheats beautifully, making it a great option for meal prep or a quick lunch the next day.

Tips for the Best Chicken and Quinoa Casserole

Drain your ingredients well. Make sure the cooked quinoa, kidney beans, and corn aren’t holding too much extra liquid before mixing them with the tomato sauce. Otherwise, your casserole might turn out a little watery.

Don’t overcook the quinoa. It should still have a slightly firm texture since it will spend some extra time in the oven.

Use your favorite cheese. Mozzarella melts beautifully, cheddar adds a richer, sharper flavor, and Parmesan gives the casserole a more intense, savory taste.

Add the avocado just before serving. I love the contrast between the cool, creamy avocado and the warm quinoa casserole with melted cheese on top.

Baked quinoa with chicken breast, kidney beans, corn, tomato sauce and melted cheese

What Can You Use Instead of Quinoa?

If you don’t have quinoa on hand or simply prefer something else, you can use rice or bulgur instead. Both work really well with the chicken, beans, and corn.

You can also switch up the other ingredients. For example, if you’d like to make a vegetarian version, just leave out the chicken and add some extra beans.

And if you like a little heat, try adding chili flakes, fresh jalapeños, or a pinch of smoked paprika.

These are just a few ways to customize the recipe, but I think it’s just as delicious exactly as it is!

How to Store and Reheat

This Mexican chicken quinoa casserole can be stored in an airtight container in the refrigerator for 3–4 days, as long as it’s cooled and refrigerated properly.

To reheat, simply pop a portion in the microwave or oven until heated all the way through. If it seems a little dry, add a splash of water or a spoonful of tomato sauce to bring back some moisture.

I recommend storing the avocado separately and adding it fresh when you’re ready to eat.

Frequently Asked Questions

Do you need to cook quinoa before baking it?

Yes! For this recipe, the quinoa needs to be cooked before being mixed with the other ingredients. The casserole only goes into the oven long enough to heat everything through and melt the cheese on top.

Can you make this chicken quinoa casserole without cheese?

Absolutely! The texture will be a little different, and you’ll miss that delicious melted cheese topping, but the casserole will still taste great without it.

Is this Mexican chicken quinoa casserole good for meal prep?

Yes! It’s a great meal prep recipe because you can make several servings at once and store them in the fridge for the next few days. Just reheat a portion whenever you need a quick lunch or dinner.

Can you freeze chicken quinoa casserole?

Yes, this casserole freezes well. Store it in airtight, freezer-safe containers, preferably in individual portions, for up to 2–3 months.

Thaw overnight in the refrigerator and reheat thoroughly before serving. If you’re adding avocado, make sure to use fresh avocado after reheating.

More Recipes You Might Like

If you enjoyed this Mexican chicken and quinoa casserole, here are a couple of other easy and satisfying recipes you might want to try:

High-Protein Pizza with Cottage Cheese Crust – If you love cheesy, oven-baked dishes, try this homemade pizza with a protein-rich crust made from cottage cheese, oat flour, and almond flour.

Vegetarian Cauliflower and Tofu Curry – A delicious meat-free option with cauliflower, tofu, and a flavorful coconut milk sauce.

Mexican Chicken and Quinoa Casserole

Recipe by Loredana Arion

Servings

servings

Prep time

minutes

Cooking time

minutes

Calories per serving

580

kcal

Protein per serving

Fiber per serving

This easy Mexican chicken and quinoa casserole is made with tender chicken breast, quinoa, kidney beans, corn, and tomato sauce, all topped with melted cheese. A delicious, protein-packed meal that’s perfect for lunch, dinner, or meal prep!

Ingredients

½ cup uncooked quinoa (about 85 g)
½ cup frozen or canned corn (about 80 g)
½ cup canned kidney beans, drained (about 85 g)
100 g (3.5 oz) chicken breast
3 tablespoons tomato passata (about 45 g)
50 g (1.8 oz) shredded mozzarella, cheddar, or Parmesan cheese
Salt and black pepper, to taste
1 medium avocado, for serving (optional)

Directions

Rinse the quinoa thoroughly under cold running water using a fine-mesh strainer. Cook according to the package instructions, usually for about 15–20 minutes, until tender. Drain any excess water.
Place the chicken breast in a pot of water and simmer until fully cooked through. Remove from the water and cut into small, bite-sized pieces.
If using frozen corn, cook it in lightly salted boiling water for about 15–20 minutes, or according to the package instructions. Drain well.
If using canned corn, simply drain it.
Rinse and drain the canned kidney beans.
In a large mixing bowl, combine the cooked quinoa, chicken, corn, kidney beans, and tomato passata.
Season with salt and black pepper, then mix everything until well combined.
Preheat the oven to 200°C (400°F).
Transfer the mixture to an oven-safe baking dish and sprinkle the shredded cheese evenly over the top.
Bake for 15–20 minutes, or until the cheese has melted and is lightly golden.
Serve warm, topped with freshly sliced or diced avocado.

Notes

The nutritional values are estimates and include avocado. They may vary depending on the type of cheese, the size of the avocado, and the specific ingredients used. Without avocado, the estimated calorie count is approximately 420 kcal per serving.
The cooking times assume that the quinoa, chicken, and corn are cooked simultaneously. Actual cooking time may vary depending on the ingredients used.