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Roasted Broccoli Quinoa Casserole

Roasted Broccoli Quinoa Casserole

This healthy casserole combines quinoa, roasted greens, and a cheesy sauce to make a meal that is both nutritious and satisfying.
5 from 1 vote
Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Course Meals
Servings 6


Roasted Vegetables

  • 5 cups broccoli florets
  • 1 large zucchini quartered slices
  • ½ cup green beans 1" pieces
  • 3 medium potatoes
  • 1 cup brussel sprouts quartered
  • 3 tablespoons olive oil
  • ½ teaspoon salt
  • 2 teaspoons garlic herb seasoning
  • ½ teaspoons ground black pepper


  • 1 ½ cup quinoa uncooked
  • 3 cups vegetable broth
  • 1 large onion diced
  • 3 cloves garlic minced
  • 1 tablespoon olive oil
  • ½ teaspoon salt
  • ½ teaspoon ground black pepper
  • 1 teaspoon garlic herb seasoning


  • 1 tablespoon olive oil
  • 1 clove garlic minced
  • 2 tablespoons flour whole wheat or other
  • 2 cups milk of choice
  • cup plain greek yogurt nonfat or reduced fat
  • ½ cup cheddar cheese fat free or reduced fat
  • ½ cup mozzarella cheese, plus more for topping fat free or reduced fat
  • ¼ cup parmesan cheese grated
  • ½ teaspoon garlic powder optional
  • 1 teaspoon onion powder optional
  • 2 teaspoons garlic herb seasoning
  • 1 teaspoon italian seasoning
  • ½-1 teaspoon salt to taste
  • ½ teaspoon ground black pepper



  • Preheat oven to 400 degrees Fahrenheit. Line a baking sheet with aluminum foil. Place all the vegetables on the tray and combine with the oil and seasonings. Bake for 15-20 minutes, until fully cooked and crisped. Take ¾ cup of the potatoes and mash or blend them. Set aside.


  • In a medium pot, heat up the oil on high. Add the onions, cook for 3 minutes, then add garlic. Cook for another minute, then add the broth and seasonings. Bring to a boil then add quinoa, cooking according to package directions (about 15 minutes simmering with lid, stirring occasionally). Set aside.
  • Preheat oven to 350 degrees Fahrenheit. Grease a large baking dish (about 10"x 10"x 2"). Set aside.


  • In a medium pot, heat the olive oil on medium high and add garlic. Cook for a minute then whisk in the flour. Slowly whisk in half of the milk, then the yogurt and mashed potatoes, then the other half of the milk. Stir in the cheese and seasonings.
  • In the prepared baking dish, combine the quinoa and vegetables, then mix in the sauce. Top with mozzarella and bake for 10 minutes. Serve and enjoy.