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Easy Quinoa Casserole Recipe – Packed with Flavor & Nutrients!

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This easy quinoa casserole is a go-to dish when you need something wholesome, filling, and full of flavor. Made with everyday ingredients like beans, corn, peppers, and fluffy quinoa, it’s the perfect combination of convenience and nourishment. Whether you’re preparing a family dinner, planning meals for the week, or cooking for a crowd, this recipe delivers on taste and simplicity. The melty cheese on top brings everything together, while the base remains customizable to suit your preferences. It’s a naturally gluten-free, protein-rich casserole that will quickly become a favorite at your table.

  • Total Time: 40 minutes
  • Yield: 6 1x

Ingredients

Scale
  • 1 cup uncooked quinoa
  • 2 cups low-sodium vegetable broth or water
  • 1 can (15 oz) black beans, drained and rinsed
  • 1 can (15 oz) corn kernels, drained
  • 1 red bell pepper, diced
  • 1 green bell pepper, diced
  • 1 medium onion, finely chopped
  • 2 garlic cloves, minced
  • 1 ½ cups shredded cheddar cheese (or alternative of choice)
  • 1 tsp ground cumin
  • ½ tsp smoked paprika
  • ½ tsp salt (adjust to taste)
  • ¼ tsp black pepper
  • 2 tbsp olive oil
  • Optional: chopped parsley or cilantro for garnish

Instructions

  1. Rinse the quinoa thoroughly using a fine-mesh sieve under cold water to remove bitterness.
  2. Cook the quinoa: In a medium pot, combine the rinsed quinoa and 2 cups of vegetable broth or water. Bring to a boil over medium-high heat. Once boiling, reduce heat to low, cover, and simmer for about 15 minutes until the quinoa absorbs the liquid. Remove from heat and fluff with a fork. Set aside.
  3. Sauté the vegetables: In a large skillet, heat olive oil over medium heat. Add chopped onion and sauté for 3–4 minutes until softened. Add minced garlic, stir for 30 seconds, then add the diced red and green bell peppers. Cook for 4–5 minutes until slightly tender.
  4. Mix the ingredients: In a large bowl, combine the cooked quinoa, sautéed vegetables, black beans, corn, cumin, smoked paprika, salt, and pepper. Stir well to combine. Fold in 1 cup of shredded cheddar cheese.
  5. Prepare to bake: Preheat the oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish. Spread the quinoa mixture evenly in the dish. Sprinkle the remaining ½ cup of cheese on top.
  6. Bake the casserole: Place the baking dish in the oven and bake for 20–25 minutes, until the cheese melts and the casserole is heated through. For a golden top, broil for an additional 2–3 minutes.
  7. Rest and garnish: Remove from the oven and let it sit for 5–10 minutes before serving. Garnish with fresh parsley or cilantro if desired.

Notes

You may replace cheddar with mozzarella, Monterey Jack, or dairy-free cheese.

Add cooked chicken or ground beef for extra protein.

Add cayenne pepper or chili flakes for spice.

This recipe is freezer-friendly and perfect for meal prep.

  • Author: Emily
  • Prep Time: 15
  • Cook Time: 25

Find it online: https://recipesmars.com/2025/07/easy-quinoa-casserole-recipe-packed-with-flavor-nutrients/