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Easy Quinoa Casserole Recipe – Healthy, Comforting & Delicious

This Easy Quinoa Casserole is a wholesome, hearty dish packed with protein, veggies, and flavor! Perfect for busy weeknights, meal prep, or a cozy family dinner, this healthy casserole is both nourishing and satisfying. With simple ingredients and minimal prep, it’s a fuss-free recipe that proves comfort food can be good for you too!
Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Course Casserole, Main Course
Cuisine American / Mediterranean-inspired
Servings 6
Calories 320 kcal

Equipment

  • 9x13-inch casserole dish (or similar baking dish)
  • Saucepan (for cooking quinoa)
  • Large mixing bowl
  • Wooden spoon or spatula
  • Aluminum foil (optional for covering)

Ingredients
  

(for base recipe – adjust as desired)

  • 1 cup quinoa, rinsed
  • 2 cups vegetable or chicken broth
  • 1 medium onion, diced
  • 2 cloves garlic, minced
  • 1 bell pepper, diced
  • 1 cup broccoli florets (or spinach)
  • 1 cup cooked protein (chicken, beans, or lentils)
  • 1 ½ cups shredded cheese (cheddar, mozzarella, or dairy-free)
  • 1 can (14 oz) diced tomatoes (drained)
  • 1 tsp dried oregano (or Italian seasoning)
  • ½ tsp paprika or chili flakes (optional)
  • 1 tbsp olive oil
  • Salt & pepper, to taste
  • Fresh herbs (parsley, basil) for garnish

Instructions
 

  • Cook quinoa: In a saucepan, combine quinoa and broth. Bring to a boil, reduce to simmer, cover, and cook for 15 minutes until fluffy. Set aside.
  • Sauté vegetables: In a skillet, heat olive oil. Add onion, garlic, and bell pepper. Cook until softened, about 5 minutes.
  • Mix filling: In a large bowl, combine cooked quinoa, sautéed vegetables, broccoli, protein of choice, diced tomatoes, and seasonings. Stir well.
  • Assemble casserole: Spread half the mixture into a greased casserole dish. Sprinkle half the cheese on top. Add the remaining mixture and top with the rest of the cheese.
  • Bake: Preheat oven to 375°F (190°C). Bake uncovered for 20–25 minutes until hot and bubbly.
  • Serve: Garnish with fresh herbs. Let rest 5 minutes before slicing and serving.

Notes

  • Make-ahead: Assemble casserole up to 24 hours in advance, cover, and refrigerate until ready to bake.
  • Freezer-friendly: Freeze baked or unbaked casserole for up to 2 months. Reheat covered with foil.
  • Vegan option: Use plant-based cheese and swap beans or lentils for animal protein.
  • Flavor swaps: Add mushrooms, sun-dried tomatoes, olives, or spice it up with jalapeños.
  • Meal prep tip: Portion into containers for 3–4 days of easy lunches or dinners.
Keyword cheesy quinoa, healthy dinner, meal prep, quinoa casserole, vegetarian bake