Cheesy Broccoli Cauliflower Quinoa Casserole

🕒 Prep: 15 min
🔥 Cook: 30 min
🍽 Serves: 6
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Looking for a comforting dish that sneaks in the veggies while still being utterly satisfying? This Cheesy Broccoli Cauliflower Quinoa Casserole is your answer. Packed with nutrients and smothered in melty cheese, it’s a hearty meal perfect for any weeknight.

Ingredients for Cheesy Broccoli Cauliflower Quinoa Casserole

Let’s take a closer look at what makes this dish so special. Starting with broccoli and cauliflower, these two veggies are not just nutritional powerhouses, but they also add great texture to the casserole. Quinoa is our protein-packed grain that makes this dish filling and hearty. The combination of sharp cheddar cheese and mozzarella cheese ensures that every bite is cheesy and gooey. Milk creates a creamy base, while butter and all-purpose flour work together to thicken the sauce. Garlic powder and onion powder bring in extra flavor, while salt and pepper help to season everything just right. Finally, a sprinkle of breadcrumbs on top gives the casserole a crunchy finish.

Tips & Tricks

  • If you're in a hurry, use pre-cut broccoli and cauliflower to save time.
  • For a gluten-free version, make sure to use gluten-free breadcrumbs and flour.
  • Letting the casserole sit for a few minutes after baking helps it firm up for easier serving.

Serving Suggestions

This casserole pairs beautifully with a simple side salad or some roasted chicken for extra protein. If you’re hosting a brunch, serve it alongside some scrambled eggs and fresh fruit for a well-rounded meal.

Frequently Asked Questions

Can I make this casserole ahead of time?
Yes, you can assemble it a day in advance, cover it, and keep it in the refrigerator. Just bake it when you're ready to serve.
What if I don’t have quinoa?
Feel free to substitute with rice or another grain like farro or barley.
How can I make it more protein-rich?
Add some cooked chicken or chickpeas into the mix for an extra protein boost.

Cheesy Broccoli Cauliflower Quinoa Casserole Recipe Walkthrough

Start by preheating your oven to 350°F. This way, by the time you’re done prepping, the oven will be ready to go. While the oven heats up, steam the broccoli and cauliflower. You want them tender, which takes about 5-7 minutes. If you’re using a steamer basket, just pop them in and let them do their thing while you move on to the next step.

Next, cook the quinoa. Follow the package instructions, which typically involve rinsing the quinoa, then boiling it with water until it’s fluffy. Set it aside once it’s done.

Now, let’s talk about the cheese sauce. Melt the butter in a saucepan over medium heat. Once melted, add the flour and whisk constantly for about 1-2 minutes. This is your roux, which will thicken the sauce. Gradually whisk in the milk. Keep whisking until the mixture thickens up nicely. Stir in the garlic powder, onion powder, salt, and pepper for flavor. Finally, add the cheddar and mozzarella cheese. Stir until the cheeses are melted and the sauce is smooth and creamy.

In a large mixing bowl, combine the cooked quinoa, broccoli, cauliflower, and the cheese sauce. Give it all a good mix to ensure everything is well coated. Transfer this mixture to a greased 9x13 inch baking dish. Sprinkle the breadcrumbs evenly over the top for that golden, crispy finish.

Bake in your preheated oven for 25-30 minutes. You’re looking for a bubbly, golden brown top. Once it’s done, let it cool for 5-10 minutes before serving. This little wait helps it set up a bit, making it easier to serve.

Why You'll Love This Recipe

  • It's a veggie-packed meal disguised as comfort food.
  • Perfect for make-ahead meals and meal prep.
  • A great way to use up leftover veggies in your fridge.
  • Kid-friendly and easy to customize.

Ingredients

1 head broccoli, chopped
1 head cauliflower, chopped
1 cup quinoa, rinsed
2 cups sharp cheddar cheese, shredded
1 cup mozzarella cheese, shredded
2 cups milk
2 tbsp butter
2 tbsp all-purpose flour (use gluten-free if needed)
1 tsp garlic powder
1/2 tsp onion powder
Salt and pepper to taste
1/4 cup breadcrumbs (use gluten-free if needed)

Step-by-step Instructions

1. Preheat the oven to 350°F.
2. Steam the broccoli and cauliflower until tender, about 5-7 minutes.
3. Cook quinoa according to package instructions and set aside.
4. In a saucepan, melt butter over medium heat. Add flour, whisking constantly for 1-2 minutes.
5. Gradually whisk in milk, continuing to whisk until the mixture thickens.
6. Stir in garlic powder, onion powder, salt, and pepper.
7. Add cheddar and mozzarella cheese, stirring until melted and smooth.
8. In a large mixing bowl, combine cooked quinoa, broccoli, cauliflower, and cheese sauce.
9. Transfer the mixture to a greased 9x13 inch baking dish.
10. Sprinkle breadcrumbs evenly over the top.
11. Bake in the preheated oven for 25-30 minutes, or until the top is golden brown and bubbly.
12. Let cool for 5-10 minutes before serving.

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