This simple slow cooker Tex-Mex Quinoa casserole is packed with nutritious ingredients and a killer seasoning blend. This quinoa dish is fairly hands off, letting the slow cooker do all the work! After it’s done cooking, finish it off with fresh lime, herbs, and freshly grated cheese.

Pair this Tex-Mex Quinoa with a light and crunchy side dish like this cucumber salad or this easy pasta salad with fresh corn.

Tex mex quinoa in crockpot full of flavor with fresh vegetables and cilantro.

Tex-Mex Quinoa made in the Slow Cooker

After sharing this Quinoa Enchilada Crockpot recipe, I’ve had so many requests for similar recipes; I’m excited to share this recipe today. My family can’t get enough of it, and I’m thrilled because it’s not only simple to assemble, it’s also loaded with nutritious ingredients.

When I first got a slow cooker years ago, finding a good, filling, vegetarian slow cooker recipe was extremely rare, so I’m pleased that this recipe fits all of those categories. While meat can certainly be added or served on the side, you won’t miss the protein in this recipe. Quinoa and black beans are two great plant-based sources of protein. And alongside that, we’ve got lots of veggies and an amazing seasoning blend. The best thing to tie everything together? Cheese of course! So let’s start by talking about that very ingredient:

Let’s talk cheese

  • Pre-grated cheese has a cellulose coating that keeps it from melting nicely. While you can use it in Tex-Mex Quinoa, it will get a little greasy and won’t melt as smoothly. I recommend freshly grating the cheese. If you have a food processor with a grater attachment, it will only take a few seconds!
  • We love pepper-Jack cheese in this recipe; it’s has a little bit of a kick with a spicy flavor and delicate mouthfeel. It also melts really well into the dish.
  • If you aren’t a fan of pepper-Jack, I’d recommend a sharp Cheddar or Monterey Jack cheese. Monterey Jack is fairly mild, so you may want to amp up the spices a bit if using that.

Ingredients being added to crockpot and cooked, fresh lime, cilantro, and cheese added on top.

Slow cooker cooking temperature

  • Unfortunately, Tex-Mex Quinoa doesn’t cook well on low temperatures; the quinoa absorbs liquid too slowly and has a tendency to become mushy. I recommend cooking this recipe on high.
  • Not all slow cookers cook at the same rate; some cook faster or hotter than others. I’ve tested this recipe in three different slow cookers and in one it was done in 2 hours 40 minutes while the other two batches took around 3 hours to finish. At around 2 and a half hours of cooking time, check on the dish, watching for the quinoa to have popped and liquid to be absorbed.
  • While it’s tempting to lift the lid to check on the dish or sample a bite, slow cookers work by trapping heat and steam while the food cooks for a longer period of time. So, every time the lid is removed, the heat escapes and takes a while to build back up again.

Quick Tip

Why does quinoa pop? It’s a lot like another seed people enjoy: popcorn! It’s caused by tiny bits of moisture inside the seed kernel. When heated, the steam expands and causes the outer hull to explode. Popped quinoa is a snack very similar to popcorn, too–except the puffs are much smaller than regular popcorn.

Tex-Mex Quinoa variations

  • Add heat: A tablespoon or two of diced jalapeños, hot sauce, and/or fire-roasted diced green chilies all add in some heat. Cayenne pepper or red pepper flakes also add in heat but add slowly– a little goes a long way!
  • Reduce heat: If you’re concerned about spiciness in this dish, you may want to slightly reduce the chili powder (or make sure to use a mild chili). I also recommend swapping out the pepper Jack cheese for Cheddar.
  • Make vegetarian: Swap out the chicken broth for vegetable broth. Even without meat, this dish has a good amount of protein in it, thanks to the quinoa and black beans.
  • Add meat: Brown some ground turkey in a skillet and stir it into the finished dish or add some shredded cooked chicken to the finished dish. 
  • Convert this recipe to a pressure cooker: I haven’t personally made this recipe in a pressure cooker, but this is a great article for converting slow cooker recipes into a pressure cooker.

Tex mex quinoa in the crockpot with a spoon and fresh toppings ready to be enjoyed.

Tex-Mex Quinoa tips

  • Use fire-roasted diced tomatoes for more flavor. I love Muir Glen’s® fire-roasted diced tomatoes (not sponsored).
  • Don’t forget the toppings. They add so much flavor, texture, and freshness to this dish. Our favorite toppings for this dish are chopped avocados, fresh cilantro, fresh lime, and fresh cherry tomatoes. Other options: sour cream, additional cheese, pico de gallo, guacamole, and green onion.
  • 2 tablespoons of chili powder may sound like a lot, but that’s the correct measurement! The heat in chili powder can certainly vary brand to brand and country to country. I use a non-spicy chili powder like McCormick® (not sponsored).
  • Crockpot® is a specific brand of slow cooker. You can use any type of slow cooker you prefer for this Tex-Mex Quinoa.

Leftovers

As good as this dish is the day it’s made, it only gets better over time! One of our favorite way to repurpose leftovers is by warming through and using as a filling for a burrito. Add a few spoonfuls of the Tex-Mex Quinoa mixture into a large tortilla, add a little extra cheese (if desired), roll up tight, and place in a skillet to brown the edges (1-2 minutes, switching sides every 30 seconds at medium heat). 

More quinoa recipes

4.91 from 31 votes

Tex-Mex Quinoa

This slow cooker Tex-Mex Quinoa casserole is loaded with nutritious ingredients and bold spices. Let the slow cooker do the work, then top it off with lime, fresh herbs, and grated cheese!
Prep Time: 20 minutes
Cook Time: 2 hours 30 minutes
Total Time: 2 hours 50 minutes
Servings: 6 servings

Equipment

  • Slow Cooker 6-quart

Ingredients 
 

  • Cooking spray
  • 1-1/2 cups white quinoa rinsed
  • 1 large sweet bell pepper finely diced (I use red)
  • 1 poblano chili pepper finely diced (or use a green pepper)
  • 1 (15-ounce) can black beans drained and rinsed
  • 1 (14.5-ounce) can fire-roasted diced tomatoes undrained
  • 1 cup frozen corn
  • 1 teaspoon minced garlic 2 cloves
  • 1/2 cup yellow onion finely diced
  • 2 tablespoons ground chili powder
  • 1-1/2 teaspoons ground cumin
  • 1/2 teaspoon garlic powder
  • 1/2 teaspoon onion powder
  • 1/2 teaspoon paprika
  • Salt and pepper
  • 3 cups chicken broth or vegetable broth; use vegetable broth to make this a vegetarian recipe
  • 1/4 cup cilantro finely diced
  • 1 lime
  • 1-1/2 cups freshly grated Pepper-jack cheese shredded
  • Toppings as desired see note 1

Instructions 

  • Spray a 6-quart slow cooker with cooking spray (or use a slow cooker liner). Add uncooked quinoa to a fine mesh sieve and rinse under cold water for 1 minute. (This removes the natural bitter coating on quinoa.)
  • Finely dice the sweet peppers and poblano chili pepper (remove seeds from both). Add chopped peppers, minced garlic, and diced onion to the slow cooker.
  • Place the rinsed quinoa, drained and rinsed black beans, undrained diced tomatoes, and corn in the slow cooker. Add seasonings: chili powder, cumin, garlic powder, onion powder, paprika, and salt and pepper to taste (I add 3/4 teaspoon salt and 1/4 teaspoon pepper). Stir everything together and put on the lid.
  • Set to high and cook for 2-1/2 to 4 hours (see note 2) or until broth is completely absorbed and quinoa is cooked through (โ€œpoppedโ€). All slow cookers cook a little differently, so make sure to occasionally check to make sure quinoa isnโ€™t burning or sticking to the sides (see note 3).
  • Once cooked through, fluff quinoa with a fork, then gently stir in chopped cilantro, 1 tablespoon fresh lime juice, and any additional salt/pepper as needed. Sprinkle freshly grated cheese on top and cover with the lid to melt for 5โ€“10 minutes. Once melted, gently stir the cheese through the dish (it will continue to melt and make everything extra cheesy). Serve with any desired toppings (additional cilantro, diced avocados, diced cherry tomatoes, additional lime, etc.).

Recipe Notes

Note 1: Try some of these optional toppings: additional cilantro, diced avocado, diced cherry tomatoes, additional lime wedges.
Note 2: This recipe doesnโ€™t cook well on low temperatures; the quinoa absorbs liquid too quickly and has a tendency to become mushy. I recommend cooking this recipe on high. Not all slow cookers cook at the same rateโ€”some cook faster or hotter than others.
Note 3: While itโ€™s tempting to lift the lid to check on the dish or sample a bite, slow cookers work by trapping heat and steam while cooking food for a longer period of time. Every time the lid is removed, heat escapes and takes a while to build back up again, so limit how often you check on the dish.
Storage: This dish gets better over time! I love adding this mixture into a large tortilla (with extra cheese), rolling it up tight, and placing it in a skillet to brown the edges (1โ€“2 minutes, switching sides every 30 seconds at medium heat). So good!

Nutrition

Serving: 1serving | Calories: 616kcal | Carbohydrates: 74g | Protein: 32g | Fat: 23g | Saturated Fat: 12g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 6g | Cholesterol: 53mg | Sodium: 1070mg | Potassium: 890mg | Fiber: 14g | Sugar: 4g | Vitamin A: 1944IU | Vitamin C: 25mg | Calcium: 535mg | Iron: 6mg

Nutrition information is automatically calculated, so should only be used as an approximation.

Meet Chelsea


Hello, and welcome to Chelseaโ€™s Messy Apron! Iโ€™m Chelsea, the recipe developer, food photographer, and writer behind the site. Iโ€™m passionate about creating simple, reliable, and delicious recipes that anyone can make.

Thanks for stopping byโ€”I hope you find something delicious to make!

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4.91 from 31 votes (2 ratings without comment)

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109 Comments

  1. Meredith says:

    This looks delicious, and I love how you can just dump everything in. That’s my kind of cooking! Pinned this one, because I’m working on adding more quinoa to my diet.

  2. Jamie says:

    This sounds awesome, Chelsea! I love that you made this in the slow cooker – I had no idea you could cook quinoa in one!!

  3. Sara Pirate says:

    5 stars
    This looks so delicious and perfect because I am looking for some easy recipes for the Summer. Thank you for sharing! SB

  4. Katie says:

    I have been wanting to try this as soon as I saw it….tomorrow we are going to a BBQ, but I think Saturday is the day. Yum!

  5. Justine says:

    Slow cooker, Tex-Mex, Quinoa, Casserole — these words are like music to my ears! I love that they are all in one dish! I’m also loving the idea of adding chicken. It’s so hard to find good slow cooker recipes for the summertime, but this is just perfect.

  6. Sherri says:

    A crock pot is perfect in the summer, especially since I try to keep my energy bills low by not running the ac too much. This still looks like the perfect light summertime meal

  7. Kelly says:

    I’ve totally been neglecting my crock-pot since the weather got warmer….I should start using it again since I’d rather be outside enjoying the weather too. This quinoa casserole looks incredible – I love the tex mex flavors.

  8. CakePants says:

    Ooh…so colorful and tasty-looking! I don’t actually own a slow cooker yet – any suggestions?

  9. Ashley says:

    Yay for crockpot meals! I love them for busy days – chop a few things in the morning and then dinner at night is so easy! This looks absolutely delicious – love me some tex mex!

  10. Jess says:

    Love the tex mex flavors for summer!