If you’re searching for a comforting, cheesy vegetable dish that will become an instant favorite, this Broccoli and Cauliflower Cheddar Casserole Recipe is pure magic. Packed with tender broccoli and cauliflower florets enveloped in a luscious blend of sharp cheddar, sour cream, and savory spices, it strikes the perfect balance between creamy richness and fresh vegetable goodness. Whether as a side dish or a main attraction, this casserole is the kind of recipe that brings warmth, vibrant colors, and irresistible flavor to your table every time.
Ingredients You’ll Need
These simple ingredients come together beautifully to create a dish that’s creamy, cheesy, and perfectly textured. Each plays a crucial role, from the freshness of the broccoli and cauliflower to the sharp kick of cheddar cheese and the crisp topping made with buttered breadcrumbs.
- Broccoli florets: Fresh and green, these add color, crunch, and subtle earthiness.
- Cauliflower florets: Creamy white florets complement the broccoli with mild sweetness and tender bite.
- Sharp cheddar cheese (2 cups): Provides bold, melty cheesiness that ties the whole casserole together.
- Sour cream (1 cup): Adds tangy creaminess that balances richness perfectly.
- Mayonnaise (1/2 cup): Enhances moisture and gives an indulgent smooth mouthfeel.
- Grated Parmesan cheese (1/4 cup): Sprinkles a salty depth in the breadcrumb topping for extra flavor.
- Dijon mustard (1 tablespoon): Brings a gentle zing to elevate the cheese sauce.
- Garlic powder (1/2 teaspoon): Infuses a warm, subtle garlicky note without overpowering.
- Onion powder (1/4 teaspoon): Adds a hint of sweetness and complexity.
- Salt and pepper: Essential seasonings to bring out the natural flavors.
- Breadcrumbs (1 cup): Create a satisfying golden crust that adds texture contrast.
- Butter (2 tablespoons, melted): Binds the breadcrumbs and adds buttery richness to the topping.
How to Make Broccoli and Cauliflower Cheddar Casserole Recipe
Step 1: Prepare Your Oven and Vegetables
Start by preheating your oven to 350°F (175°C). While it’s warming up, bring a large pot of salted water to a boil. This will be for blanching the broccoli and cauliflower, ensuring they stay tender yet crisp after cooking.
Step 2: Blanch the Broccoli and Cauliflower
Once the water is boiling, add the broccoli and cauliflower florets and cook them for about 5 minutes. This quick blanch softens the vegetables just enough while keeping their vibrant color and a delightful snap.
Step 3: Shock and Drain the Vegetables
Immediately drain the cooked vegetables and dunk them into a bowl of ice water. This stops the cooking process, locking in that perfect texture. After chilling, drain well and set aside to prepare the cheesy sauce.
Step 4: Mix the Cheesy Sauce
In a large bowl, whisk together sour cream, mayonnaise, Dijon mustard, garlic powder, onion powder, and half of the shredded cheddar cheese. This creamy, tangy sauce will coat the vegetables beautifully and infuse them with flavor.
Step 5: Combine Vegetables and Sauce
Gently fold the blanched broccoli and cauliflower into the cheese mixture, ensuring every floret is generously covered. This step is key to melding the flavors with the vegetables without breaking them apart.
Step 6: Assemble the Casserole
Transfer the vegetable-cheese blend to a greased 9×13 inch casserole dish. Spread the mixture evenly to form the base of the dish that will soon be bubbling with cheesy goodness.
Step 7: Prepare the Topping
In a small bowl, mix the breadcrumbs with melted butter, the remaining cheddar cheese, and the grated Parmesan. This combination will bake into a golden, crispy crust that contrasts wonderfully with the creamy interior.
Step 8: Top and Bake
Sprinkle the breadcrumb and cheese mixture evenly over the casserole. Place it in the preheated oven and bake for 25-30 minutes. You’re aiming for a beautifully golden top with bubbly, melted cheese beneath.
Step 9: Let It Rest
After baking, allow the casserole to rest for a few minutes. This helps it set slightly, making it easier to serve and letting the flavors settle into every bite.
How to Serve Broccoli and Cauliflower Cheddar Casserole Recipe
Garnishes
A sprinkle of freshly chopped parsley or chives adds a pop of color and fresh herbal note that contrasts the richness. You can also add a light dusting of paprika for visual appeal and a hint of smoky flavor.
Side Dishes
This casserole pairs beautifully with roasted meats, simple grilled chicken, or even a crisp green salad. The creamy texture and cheesy flavor make it a fantastic side that complements a wide range of mains, especially during family dinners or holiday feasts.
Creative Ways to Present
For a stunning presentation, serve the casserole in individual ramekins or small cast-iron skillets. This not only looks charming but also keeps portions warm and allows everyone to enjoy their own personal serving of this delectable dish.
Make Ahead and Storage
Storing Leftovers
After the casserole cools completely, cover it tightly with plastic wrap or transfer leftovers to an airtight container. Stored in the refrigerator, it will stay fresh for up to 3 days, maintaining its cheesy goodness and vegetable texture.
Freezing
This Broccoli and Cauliflower Cheddar Casserole Recipe freezes wonderfully. Wrap the cooled casserole securely with plastic wrap and aluminum foil, or freeze individual portions in freezer-safe containers. It can be frozen for up to 2 months without losing flavor or texture.
Reheating
To reheat, thaw overnight in the refrigerator if frozen. Warm the casserole in a 350°F (175°C) oven for about 20 minutes or until heated through and bubbly. Avoid microwaving if you want to retain the crispy breadcrumb topping, as the oven method preserves that delightful crunch.
FAQs
Can I use frozen broccoli and cauliflower instead of fresh?
Absolutely! Frozen vegetables work well in this recipe—but make sure to thaw and drain them thoroughly to avoid excess moisture, which could make the casserole watery.
What can I substitute for mayonnaise if I don’t have any?
You can swap mayonnaise for an equal amount of Greek yogurt or extra sour cream to keep that creamy texture and tangy flavor.
Is it possible to make this casserole dairy-free or vegan?
Yes, by using plant-based cheese alternatives, vegan sour cream, and mayonnaise, you can adapt this recipe to suit dairy-free or vegan diets with tasty results.
How do I make the breadcrumb topping extra crispy?
Use panko breadcrumbs for a lighter, crunchier texture and ensure the butter is melted and evenly mixed to help the topping brown beautifully.
Can I add other vegetables to the casserole?
Definitely! Feel free to mix in steamed carrots, peas, or even some cooked mushrooms for extra flavor and variety. Just be mindful of moisture levels to keep the casserole from becoming soggy.
Final Thoughts
You simply can’t go wrong with this Broccoli and Cauliflower Cheddar Casserole Recipe. It combines familiar, wholesome ingredients into a dish that feels both cozy and special — perfect for weeknight dinners or holiday tables. I hope you give it a try and find yourself coming back to it again and again, sharing it with loved ones and creating warm memories around every delicious bite.
