Mexican Quinoa Casserole Recipe
Introduction
This Mexican Quinoa Casserole is a flavorful and hearty dish perfect for a comforting weeknight meal. Packed with colorful vegetables, black beans, and a blend of Mexican spices, it’s a nutritious twist on traditional enchiladas. Topped with melty cheese and fresh garnishes, it’s sure to please the whole family.

Ingredients
- 1.25 cups uncooked quinoa
- 2 medium onions, diced
- 6 cloves garlic, minced
- 1 jalapeno pepper, seeds removed and finely diced
- 1 red bell pepper, diced
- 1 (10 oz) bag frozen corn
- 16 oz enchilada sauce
- 2 cans black beans, drained
- 3 cups Mexican cheese blend, shredded
- Juice of 1 large lime
- 1 tablespoon cumin
- 1/4 teaspoon cayenne pepper
- 1 teaspoon chili powder
- 1/2 teaspoon smoked paprika
- Salt, to taste
- Black pepper, to taste
- Diced roma tomatoes, for topping
- Diced avocado, for topping
- Sliced lime wedges, for serving
- Sour cream, for serving (optional)
- Tortilla chips, for serving (optional)
Instructions
- Step 1: Rinse the quinoa thoroughly and cook it according to package instructions. Set aside once cooked.
- Step 2: Remove the seeds from the jalapeno pepper and dice it finely.
- Step 3: Dice the garlic, onions, and red bell pepper.
- Step 4: In a skillet, combine the diced bell pepper, jalapeno, garlic, onion, 1 tablespoon olive oil, 1/4 teaspoon salt, and 1/4 teaspoon black pepper.
- Step 5: Sauté the mixture on medium-high heat, stirring often, for 8–10 minutes until the peppers begin to soften.
- Step 6: Add the frozen corn to the skillet and cook for another 4–5 minutes until heated through.
- Step 7: In a large bowl, combine the cooked quinoa, sautéed vegetable mixture, lime juice, drained black beans, enchilada sauce, 1 1/2 cups of shredded cheese, cumin, cayenne, chili powder, and smoked paprika.
- Step 8: Stir everything well and add additional salt and pepper to taste if desired.
- Step 9: Transfer the mixture to a 9 x 13-inch baking dish, spreading it evenly.
- Step 10: Bake the casserole at 375°F (190°C) for 20 minutes.
- Step 11: Remove the casserole from the oven and sprinkle the remaining 1 1/2 cups of cheese evenly over the top.
- Step 12: Return to the oven and bake for an additional 10 minutes or until the cheese is melted and bubbly.
- Step 13: Remove from oven and top with diced roma tomatoes and diced avocado. Serve with optional fresh lime wedges, sour cream, and tortilla chips.
Tips & Variations
- Use cooked chicken or ground turkey for added protein.
- For extra spice, leave some jalapeno seeds or add a dash of hot sauce.
- Swap the Mexican cheese blend for pepper jack for a spicier flavor.
- Use fresh corn if available in season to enhance freshness.
- To make it vegan, omit cheese or use a plant-based cheese alternative.
Storage
Store leftover casserole covered in the refrigerator for up to 3 days. Reheat in the oven at 350°F (175°C) until warmed through, about 15–20 minutes, or microwave individual portions. The casserole can also be frozen for up to 2 months; thaw overnight in the refrigerator before reheating.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I prepare this casserole ahead of time?
Yes, you can assemble the casserole a day in advance and keep it covered in the refrigerator. Bake it fresh when ready to serve for best texture and flavor.
Is quinoa a good substitute for rice in casseroles?
Absolutely. Quinoa adds a nutty flavor and extra protein while cooking faster than rice, making it a nutritious and convenient option in casseroles.
PrintMexican Quinoa Casserole Recipe
This Mexican Quinoa Casserole is a hearty, flavorful vegetarian dish that combines fluffy quinoa with sautéed peppers, black beans, and a zesty enchilada sauce. Topped with a melty Mexican cheese blend and fresh garnishes like diced tomatoes and avocado, it’s a satisfying one-dish meal perfect for family dinners or meal prep.
- Prep Time: 20 minutes
- Cook Time: 35 minutes
- Total Time: 55 minutes
- Yield: 6 servings 1x
- Category: Casserole
- Method: Baking
- Cuisine: Mexican
- Diet: Vegetarian
Ingredients
Quinoa Base
- 1.25 cups uncooked quinoa
Vegetables and Aromatics
- 2 medium onions, diced
- 6 cloves garlic, minced
- 1 jalapeno pepper, seeds removed and finely diced
- 1 red bell pepper, diced
- 1 10 oz bag frozen corn
- Diced roma tomatoes, for topping
- Diced avocado, for topping
- Sliced lime wedges, for serving
Beans and Sauce
- 2 cans black beans, drained
- 16 oz enchilada sauce
- Juice of 1 large lime
Cheese and Seasonings
- 3 cups Mexican cheese blend, shredded (divided: 1 1/2 cups for mixing, 1 1/2 cups for topping)
- 1 tablespoon cumin
- 1/4 teaspoon cayenne pepper
- 1 teaspoon chili powder
- 1/2 teaspoon smoked paprika
- Salt, to taste
- Pepper, to taste
- 1 tablespoon olive oil
Optional for Serving
- Sour cream
- Tortilla chips
Instructions
- Cook Quinoa: Rinse quinoa thoroughly under cold water. Cook according to package instructions until fluffy. Set aside to cool slightly.
- Prepare Vegetables: Remove seeds from the jalapeno pepper and dice finely. Dice the onion, garlic, and red bell pepper.
- Sauté Vegetables: In a skillet, heat 1 tablespoon of olive oil over medium-high heat. Add diced bell pepper, jalapeno, garlic, and onion along with 1/4 teaspoon salt and 1/4 teaspoon pepper. Sauté, stirring often, for 8 to 10 minutes until the peppers start to soften.
- Add Corn: Stir in the frozen corn and cook for another 4 to 5 minutes until heated through.
- Combine Casserole Mixture: In a large bowl, combine the cooked quinoa, sautéed vegetable mixture, juice of one large lime, drained black beans, enchilada sauce, 1 1/2 cups of shredded Mexican cheese blend, cumin, cayenne, chili powder, and smoked paprika. Mix thoroughly. Adjust salt and pepper to taste if desired.
- Prepare Baking Dish: Transfer the quinoa and vegetable mixture evenly into a 9×13 inch baking dish.
- First Bake: Bake uncovered in a preheated oven at 375°F (190°C) for 20 minutes to heat through and allow flavors to meld.
- Add Cheese Topping: Remove the casserole from the oven and sprinkle the remaining 1 1/2 cups of Mexican cheese blend evenly on top.
- Final Bake: Return to oven and bake an additional 10 minutes or until the cheese is melted and bubbly.
- Serve: Garnish the casserole with diced roma tomatoes and diced avocado. Serve warm with optional fresh lime wedges, sour cream, and tortilla chips on the side.
Notes
- Rinsing quinoa before cooking removes its natural bitterness.
- Removing jalapeno seeds reduces spiciness while retaining flavor.
- Cheese can be substituted with dairy-free alternatives to make this vegan.
- This casserole can be made ahead and refrigerated, then baked before serving.
- For extra protein, add cooked chicken or ground turkey if not vegetarian.
- Adjust spices to your heat preference, especially cayenne and jalapeno amount.
Keywords: Mexican Quinoa Casserole, Vegetarian Casserole, Mexican Food, Quinoa Recipes, Healthy Dinner, Enchilada Casserole

