Cheesy Veggie Quinoa Casserole Recipe

Prepare to fall in love with this Cheesy Veggie Quinoa Casserole—a dish that transforms simple, wholesome ingredients into pure comfort food bliss. Packed with a delightful mix of vegetables and two kinds of melty cheese, all nestled in hearty, nutty quinoa, this casserole bakes up golden and bubbly with irresistible flavor in every bite. Whether you’re catering to vegetarians or just craving a cozy night-in meal, this Cheesy Veggie Quinoa Casserole is sure to become your new go-to favorite for busy weeknights, potlucks, or any occasion that calls for something deliciously satisfying.

Ingredients You’ll Need

Ingredients You’ll Need

The beauty of this Cheesy Veggie Quinoa Casserole lies in its simplicity—the ingredients are straightforward, yet each one brings something special, from vibrant color to creamy richness. Together, they create a dish that’s as nourishing as it is crave-worthy!

• Quinoa (1 cup, uncooked): The nutty, protein-packed base absorbs all the cheesy goodness and provides structure to the casserole. Cook before using!
• Broccoli Florets (2 cups, bite-sized): For lovely color, crunch, and loads of vitamins, broccoli is a bright, tasty backbone for this dish.
• Carrots (1 cup, diced): Adds sweetness and beautiful orange color, plus a satisfying tender bite after baking.
• Bell Peppers (1 cup, diced): Choose mixed colors for maximum visual appeal; they infuse a subtle tang and keep things lively with their crispness.
• Onion (1 medium, diced): Essential for that aromatic baseline; onions become meltingly sweet as they cook.
• Garlic (2-3 cloves, minced): Offers that signature savory note that brings all the veggies and cheese together.
• Vegetable Broth (2 cups): Used to cook the quinoa and deepen the casserole’s flavor profile—with room for a chicken broth if you prefer.
• Milk or Cream (1 cup): Ensures a luscious, creamy texture; whole milk adds richness, but feel free to use cream for indulgence or 2% milk for lighter results.
• Shredded Cheese (2 cups, cheddar & mozzarella): Cheddar for classic sharp flavor, mozzarella for melty stretch—feel free to mix in Monterey Jack or Gruyere!
• Parmesan Cheese (¼ cup, grated): Sprinkled on top, it creates a nutty, golden-brown crust and deeper flavor.
• Butter or Olive Oil (2 tablespoons): For sautéing and richness—olive oil keeps things light, while butter intensifies comfort-food vibes.
• All-Purpose Flour or Cornstarch (2 tablespoons): Whisked in for thickening the sauce; cornstarch is a great gluten-free option.
• Dried Oregano & Thyme (1 teaspoon each): These pantry herbs add warmth, earthiness, and savory depth.
• Salt and Black Pepper (to taste): Don’t skimp—season each layer for the most flavorful results.
• Optional: Red Pepper Flakes (¼ teaspoon): For a gentle kick of background heat—add more or less depending on your crew.
• Optional: Fresh Parsley or Chives: Just a sprinkle makes the finished dish pop with freshness and color.

How to Make Cheesy Veggie Quinoa Casserole

Step 1: Cook the Quinoa

Start by thoroughly rinsing the quinoa under cold water to remove any bitterness. In a saucepan, combine the quinoa and vegetable broth (or water if you don’t have broth on hand). Bring it to a simmer, cover, and cook until the liquid is absorbed and the quinoa is fluffy—about 15 minutes. Set aside and fluff with a fork once it’s done.

Step 2: Sauté the Vegetables

Heat your butter or olive oil in a large skillet over medium heat. Add the diced onion and sauté until translucent and fragrant, about 3-4 minutes. Toss in the garlic, carrots, bell peppers, and broccoli. Sauté for another 4-5 minutes until the vegetables have softened slightly but still have a touch of crunch for texture.

Step 3: Make the Creamy Cheese Sauce

Sprinkle the flour (or cornstarch) over the sautéed veggies, stirring constantly for about a minute to form a light roux. Gradually pour in the milk (or cream), then stir until the sauce begins to thicken and bubble gently. Lower the heat and stir in the shredded cheddar and mozzarella, letting them melt into a gloriously creamy sauce. Season generously with salt, pepper, and dried herbs. If you like a little fire, add your red pepper flakes here.

Step 4: Assemble the Casserole

Preheat your oven to 375°F (190°C). In a very large bowl, combine the cooked quinoa with your cheesy veggie mixture, stirring until everything is evenly coated with sauce. Taste and adjust seasoning—it should be flavorful and cheesy at this stage! Transfer the mixture to a greased 9×13-inch casserole dish, smoothing the top.

Step 5: Top and Bake

Finish with a generous sprinkle of grated Parmesan cheese over the casserole (and maybe a little more shredded mozzarella if you like extra cheesiness). Bake uncovered for 22-25 minutes, or until the casserole is bubbling at the edges and the top is deeply golden. If you like a crispier top, broil it for the last 2-3 minutes, watching closely.

Step 6: Rest, Garnish, and Serve

Allow the Cheesy Veggie Quinoa Casserole to cool for at least 10 minutes before serving—this helps it set and makes slicing easier. Just before serving, shower the top with freshly chopped parsley or chives for a bright finishing touch!

How to Serve Cheesy Veggie Quinoa Casserole

Garnishes

A finishing touch of fresh herbs like parsley or chives instantly elevates the Cheesy Veggie Quinoa Casserole, making it feel vibrant and restaurant-worthy. For extra flavor, you can sprinkle a little more Parmesan or a dash of red pepper flakes over the top before bringing it to the table.

Side Dishes

This casserole is wonderfully hearty all on its own, but a simple green salad with a bright vinaigrette creates a fresh counterpoint to the richness. Steamed green beans, roasted asparagus, or a tangy slaw all go beautifully with Cheesy Veggie Quinoa Casserole, rounding out the meal without stealing the spotlight.

Creative Ways to Present

If you’re feeling playful, scoop the Cheesy Veggie Quinoa Casserole into individual ramekins for personal portions—perfect for dinner parties or meal prep. You can also use leftover casserole as a delicious filling for stuffed bell peppers, or even roll it into wraps with crisp lettuce for a grab-and-go lunch.

Make Ahead and Storage

Storing Leftovers

Leftover Cheesy Veggie Quinoa Casserole keeps wonderfully in the fridge! Let it cool completely, then cover tightly or transfer to airtight containers. It will stay fresh for up to 4 days, making it a meal prep superstar for busy weeks.

Freezing

Casseroles are freezer champions. Once cooled, portion the Cheesy Veggie Quinoa Casserole into airtight, freezer-safe containers or wrap the whole dish well in plastic wrap and foil. It can be frozen for up to 2 months. Thaw overnight in the fridge before reheating for best texture and flavor.

Reheating

For best results, reheat leftovers in a 350°F (180°C) oven, covered, until warmed through (about 20 minutes). You can also microwave individual portions—just add a splash of milk to keep things moist and creamy. The cheese might not get quite as stretchy, but the flavors will still be fantastic!

FAQs

Can I use other vegetables in my Cheesy Veggie Quinoa Casserole?

Absolutely—this casserole is fabulously adaptable! Try zucchini, mushrooms, spinach, or peas. Just be sure to sauté or steam any heartier veggies first so they’re not too crunchy in the finished dish.

Can I make this Cheesy Veggie Quinoa Casserole vegan?

You bet! Swap the milk or cream for your favorite unsweetened plant-based milk (like oat, soy, or almond), use vegan cheese, and opt for olive oil instead of butter. The result is still creamy, comforting, and full of flavor.

What can I do if my casserole turns out watery?

Too much liquid usually means the quinoa wasn’t fully cooked or drained, or the vegetables released excess moisture. Next time, make sure to cook the quinoa until dry and sauté the veggies long enough to remove extra water. Letting the casserole cool a bit after baking also helps it set.

Can Cheesy Veggie Quinoa Casserole be made ahead of time?

Absolutely! Assemble the casserole up to a day ahead, cover tightly, and refrigerate. When ready to bake, let it sit at room temperature for 30 minutes, then bake as directed. It’s a lifesaver for busy schedules and make-ahead entertaining!

What’s the best cheese combination for this casserole?

A blend of sharp cheddar and mozzarella is a classic for both melty goodness and flavor, but Monterey Jack, Gruyere, smoked Gouda, or even pepper jack take it in fun new directions. Don’t be shy—experiment with your cheesy favorites!

Final Thoughts

If you’re looking for a comfort food dish that truly celebrates both flavor and nutrition, this Cheesy Veggie Quinoa Casserole absolutely delivers. There’s something so satisfying about that cheesy, golden crust over a medley of tender veggies and hearty quinoa. I can’t wait for you to try it—let me know how you make it your own!

Cheesy Veggie Quinoa Casserole Recipe

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★★★★★

5.1 from 23 reviews

• Author: Ava
• Total Time: 1 hour
• Yield: 6 servings
• Diet: Vegetarian

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Description

This Cheesy Veggie Quinoa Casserole is a flavorful and nutritious dish that combines fluffy quinoa, colorful vegetables, and gooey cheese for a satisfying meal the whole family will love.

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Ingredients

Quinoa:

1 cup, uncooked.

Broccoli Florets:

2 cups, cut into small, bite-sized pieces.

Carrots:

1 cup, diced.

Bell Peppers:

1 cup, diced.

Onion:

1 medium, diced.

Garlic:

2-3 cloves, minced.

Vegetable Broth:

2 cups.

Milk (or Cream for extra richness):

1 cup.

Shredded Cheese:

2 cups.

Parmesan Cheese:

¼ cup, grated.

Butter or Olive Oil:

2 tablespoons.

All-Purpose Flour (or gluten-free alternative like cornstarch):

2 tablespoons.

Dried Herbs:

1 teaspoon each of dried oregano and dried thyme.

Salt and Black Pepper:

To taste.

Optional:

Red Pepper Flakes, Fresh Parsley or Chives.

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Instructions

1. Cook Quinoa: Rinse quinoa, then cook according to package instructions. Set aside.
2. Prep Vegetables: Cut broccoli, carrots, bell peppers, onion, and mince garlic.
3. Sauté Vegetables: In a large skillet, sauté onion and garlic in butter or olive oil until fragrant. Add remaining vegetables and cook until slightly tender.
4. Make Sauce: Sprinkle flour over veggies, then slowly stir in broth and milk. Add herbs, salt, pepper, and red pepper flakes.
5. Combine Ingredients: Mix in cooked quinoa and half of the shredded cheese. Transfer to a baking dish.
6. Add Cheese: Top with remaining shredded cheese and Parmesan.
7. Bake: Bake until bubbly and golden.
8. Garnish: Sprinkle with fresh parsley or chives before serving.

Notes

• You can customize this casserole by adding your favorite veggies or protein sources.
• This dish reheats well, making it perfect for meal prep.
• For a crispy topping, broil the casserole for a few minutes at the end of baking.

• Prep Time: 20 minutes
• Cook Time: 40 minutes
• Category: Main Dish
• Method: Baking
• Cuisine: American

Nutrition

• Serving Size: 1 serving
• Calories: 320
• Sugar: 4g
• Sodium: 620mg
• Fat: 18g
• Saturated Fat: 10g
• Unsaturated Fat: 6g
• Trans Fat: 0g
• Carbohydrates: 28g
• Fiber: 4g
• Protein: 14g
• Cholesterol: 50mg

Keywords: Cheesy Veggie Quinoa Casserole, Quinoa Casserole, Vegetable Casserole, Cheesy Casserole