Name: Broccoli Quinoa Casserole with Cheesy Yogurt Sauce Recipe
Prep time: 20 min
Cook time: 1 h 5 min
Total time: 1 h 25 min
Cuisine: American
Ingredients: 3 cups low sodium vegetable broth or low sodium chicken broth (divided); 1 cup uncooked quinoa; 1 pound chopped broccoli florets (about 4 broccoli crowns); 3 tablespoons extra virgin olive oil (divided, plus additional as needed); 1 1/2 teaspoons kosher salt (divided); 1/2 teaspoon ground black pepper (divided); 1 small yellow onion, chopped; 3 medium carrots, cut into 1/4 to 1/3-inch dice; 1 teaspoon minced garlic (about 2 cloves); 1 teaspoon dried oregano; 1/8 teaspoon cayenne pepper (optional); 2 tablespoons all purpose flour; 1 cup non-fat milk; 1 cup plain nonfat Greek yogurt; 3/4 cup freshly grated mozzarella cheese (divided; fontina or provolone can also be used); 3/4 cup freshly grated sharp cheddar cheese (divided); 1 15-ounce can cannellini beans, rinsed and drained; Chopped fresh herbs (such as parsley, basil, dill, or thyme for serving)

Jump to Recipe· 4.4 from 10 reviews

If you’re searching for a cozy, wholesome, and delightfully cheesy meal, this Broccoli Quinoa Casserole with Cheesy Yogurt Sauce Recipe is going to steal your heart. Bursting with vibrant roasted broccoli, fluffy quinoa, and a luscious cheesy yogurt sauce that’s both creamy and tangy, this casserole is a perfect way to enjoy a health-conscious dinner without compromising on comfort and flavor. It’s a dish that brings the goodness of vegetables and protein together, elevated by a rich, homemade sauce that wraps everything in pure indulgence. Trust me, once you try this recipe, it will become a staple in your kitchen!

Ingredients You’ll Need

A clear glass bowl filled with bright green broccoli florets sits on a dark wooden cutting board. To the left of the bowl, there are three whole orange carrots lying flat on the board. To the right, a white bowl full of pale beige beans rests partially on a white and grey striped cloth. All items are placed on a white marbled surface. Photo taken with an iphone --ar 4:5 --v 7

This recipe comes together beautifully with a handful of simple, straightforward ingredients, each playing an essential role in building layers of texture and flavor. From the hearty quinoa to the roasted broccoli’s smoky notes, and the tangy richness of Greek yogurt blended with melty cheeses, every component shines in harmony.

Low sodium vegetable or chicken broth (3 cups): Provides a savory base to cook quinoa and create the sauce without overwhelming saltiness.
Uncooked quinoa (1 cup): Adds a light, slightly nutty grain that adds bulk and good protein to the casserole.
Extra virgin olive oil (3 tablespoons, plus extra): For roasting broccoli and sautéing veggies brings out their best natural flavors.
Broccoli florets (1 pound): The star vegetable, roasted until just tender with crisp edges for texture and vibrant green color.
Kosher salt (1 1/2 teaspoons): Enhances and balances all the flavors throughout the dish.
Ground black pepper (1/2 teaspoon): Adds just the right amount of gentle heat and depth.
Yellow onion (1 small, chopped): Softens and sweetens when sautéed, providing an aromatic foundation.
Carrots (3 medium, diced): Introduce natural sweetness and a pop of color.
Minced garlic (1 teaspoon): Gives that irresistible fragrant punch to the sautéed veggies.
Dried oregano (1 teaspoon): Offers a subtle earthiness that brightens the sauce.
Cayenne pepper (1/8 teaspoon, optional): A hint of warming spice for those who like a little kick.
All purpose flour (2 tablespoons): Helps thicken the sauce perfectly without clumps.
Non-fat milk (1 cup): Adds creaminess, lightening the sauce for balance.
Plain nonfat Greek yogurt (1 cup): The game-changer for the cheesy yogurt sauce, lending tang and richness without heaviness.
Freshly grated mozzarella (3/4 cup, divided): Melts beautifully, creating gooey layers of cheesy goodness.
Freshly grated sharp cheddar cheese (3/4 cup, divided): Brings sharpness and depth to complement the mellow mozzarella.
Cannellini beans (1 15-ounce can, rinsed and drained): Boosts the protein and adds a creamy texture.
Fresh herbs like parsley, basil, dill, or thyme (chopped): For garnish, adding a fresh burst of flavor and lively color.

How to Make Broccoli Quinoa Casserole with Cheesy Yogurt Sauce Recipe

Step 1: Preheat and Prep Your Oven

Start by positioning your racks in the upper and lower thirds of the oven and heating it to 400°F. Preparing your baking sheets and casserole dish with nonstick spray will ensure nothing sticks and clean-up is a breeze. This setup gets the stage ready for perfectly cooking the ingredients.

Step 2: Cook the Quinoa

In a large saucepan, combine 2 cups of the broth with the quinoa and bring it to a simmer. Cover and cook over low heat for 15 minutes. Then, let the quinoa stand covered for 5 more minutes to finish absorbing all that flavorful broth. Fluff it gently with a fork so it’s light and airy – this makes the casserole texture beautifully tender.

Step 3: Roast the Broccoli to Perfection

While the quinoa cooks, toss the broccoli florets in olive oil, kosher salt, and black pepper right in a large bowl. Spread them evenly across two baking sheets, making sure none overlap so they roast rather than steam. Roast for 10 minutes, then carefully toss and spread again. Return to the oven for another 5 to 10 minutes until the broccoli is golden, crisping up the tips for incredible flavor and texture contrast.

Step 4: Sauté the Aromatics

In a big, deep sauté pan, heat some olive oil over medium heat, then soften the chopped onion and diced carrots for about 5 minutes until the veggies start to become tender and sweet. Add garlic, along with the remaining salt and black pepper, cooking just until you smell that wonderful garlicky aroma – less than a minute.

Step 5: Make the Creamy Sauce Base

Sprinkle the flour in and cook it briefly to develop a lightly toasted, nutty scent, avoiding any raw flour taste. Slowly whisk in the last cup of broth plus the milk, taking your time to keep the sauce smooth and lump-free. Bring it up to a gentle simmer, then stir in oregano and cayenne pepper. Let this bubble gently so it thickens slightly into a rich base.

Step 6: Combine Quinoa, Beans, and Broccoli

Turn off the heat and fold the cooked quinoa, cannellini beans, and roasted broccoli into the sauce. This blend brings all the star ingredients together, each complementing the others with brightness, creaminess, or earthiness. Taste and adjust seasoning if you need a little more salt or pepper.

Step 7: Stir in the Cheesy Yogurt Blend

Now for the magic of the Broccoli Quinoa Casserole with Cheesy Yogurt Sauce Recipe: slowly stir in the Greek yogurt with half of both mozzarella and cheddar cheeses. This gives you that creamy, tangy sauce that’s wonderfully indulgent yet lighter than traditional cheese sauces.

Step 8: Bake and Broil for Melted Perfection

Pour the mixture into your prepared casserole dish and smooth it out evenly. Sprinkle the rest of the cheddar and mozzarella on top to create a golden, bubbling crust. Bake uncovered for 15 minutes to heat through and melt the cheeses. Finally, broil for a few minutes to achieve that irresistible, lightly browned cheese topping – watch carefully to avoid burning. After resting briefly, it’s ready to serve.

How to Serve Broccoli Quinoa Casserole with Cheesy Yogurt Sauce Recipe

A white bowl filled with a layered dish showing roasted broccoli florets with browned edges on the top, melted light yellow cheese stretched over the broccoli and quinoa, white beans and small orange carrot pieces mixed in a middle beige quinoa layer which looks creamy and soft. A silver fork rests inside the bowl on the right side. The bowl sits on a white marbled surface with a white and blue striped cloth partially visible next to it. photo taken with an iphone --ar 4:5 --v 7

Garnishes

Fresh chopped herbs like parsley, basil, dill, or thyme bring a pleasant herbaceous lift to the casserole. Sprinkle generously right before serving to add a fresh pop of green and brighten up each bite with aromatic flavor nuances.

Side Dishes

This casserole works wonderfully as a complete meal, but if you want to round things out, consider light and crisp sides such as a simple green salad dressed in lemon vinaigrette, or roasted root vegetables that echo the comforting warmth of the main dish.

Creative Ways to Present

Serve this casserole family-style straight from the baking dish for a cozy vibe or portion it into individual ramekins for charming presentation. You can also jazz it up by topping each portion with a sprinkle of toasted breadcrumbs or a drizzle of chili oil to add texture and a hint of heat.

Make Ahead and Storage

Storing Leftovers

Store leftovers in an airtight container in the refrigerator for up to 4 days. The casserole flavors actually meld nicely overnight, making it even better the next day. Just be sure to cool it before sealing to preserve texture.

Freezing

This casserole freezes beautifully. Portion it into freezer-safe containers and freeze for up to 3 months. For best results, thaw overnight in the fridge before reheating.

Reheating

Reheat leftovers gently in the oven at 350°F until warmed through, about 20 minutes, or microwave individual portions on medium power in short intervals, stirring to ensure even heating. This helps keep the cheesy yogurt sauce creamy and luscious.

FAQs

Can I use different vegetables instead of broccoli?

Absolutely! Cauliflower, green beans, or Brussels sprouts work wonderfully roasted and incorporated into this casserole, offering a similar texture and allowing flavor creativity.

Is this casserole vegetarian?

Yes, it is! Using vegetable broth keeps it vegetarian. For a vegan version, swap out the dairy and cheese for plant-based alternatives.

Can this recipe be made gluten-free?

Yes, simply substitute the all-purpose flour with a gluten-free flour blend or cornstarch to thicken the sauce without gluten.

What kind of quinoa should I use?

White or tricolor quinoa works best due to their lighter texture and quicker cooking. Be sure to rinse quinoa well before cooking to remove any bitterness.

Can I prepare this casserole ahead of time and bake it later?

Definitely! Assemble the casserole and refrigerate it uncovered for a few hours before baking. You may need to add a few extra minutes to the baking time if baking straight from the fridge.

Final Thoughts

This Broccoli Quinoa Casserole with Cheesy Yogurt Sauce Recipe is the perfect marriage of healthy, comforting, and utterly delicious. It’s the kind of dish that invites warm conversations and full plates, whether for family dinners or casual gatherings. I can’t wait for you to make it your own and enjoy every cheesy, veggie-packed, wholesome bite!