Cauliflower Casserole
The warm, inviting scent of Cauliflower Casserole wafting through the kitchen is like a comforting hug. Picture tender cauliflower florets bathed in creamy, cheesy goodness, bubbling away until golden brown on top. As I reminisce about family gatherings, I can still hear the laughter and see loved ones eagerly lining up for their portion of this delightful dish. It’s perfect for cozy dinners on chilly autumn evenings or festive holiday celebrations, bringing both nostalgia and joy to the table. Whether you’re enjoying it as a side dish or the star of your meal, this casserole is sure to create memorable moments. I can hardly wait for you to try this recipe that’s both comforting and a bit indulgent!
Table of Contents

So, roll up your sleeves and let’s whip up this delicious Cauliflower Casserole together. You won’t regret it!
Why You’ll Love This Recipe
- Simple & Quick: With just 20 minutes of prep and minimal fuss, this casserole is as easy as it is delicious.
- Irresistible Flavor: Creamy cheese, crispy bacon, and tender cauliflower combine for a dish that tantalizes your taste buds.
- Eye-Catching Appeal: This casserole looks stunning on any table with its bubbling cheese and bacon garnish, making it a showstopper.
- Flexible Serving: Perfect for potlucks, weeknight meals, or brunch, it fits right into any occasion.
- Diet-Friendly Options: Swap in gluten-free flour and dairy-free cheese if needed for accommodating dietary restrictions.

Ingredients You’ll Need
- 6 cups cauliflower florets, cooked: Steam or boil until fork-tender; fresh or frozen works well here. If using fresh, try to cut them into even-sized pieces for uniform cooking.
- 3 tablespoons butter: Adds richness and flavor. You can use olive oil for a lighter option.
- 1 tablespoon garlic, minced: Fresh garlic works best for bright, aromatic flavor.
- 3 tablespoons all-purpose flour: This is used to thicken the cheese sauce; you can substitute with a gluten-free blend if needed.
- 2 cups milk (whole milk recommended): The base of your creamy sauce. Any milk works, but whole gives the best texture.
- Salt and pepper to taste: Essential for balancing flavors. Don’t skip this step!
- 1/2 cup parmesan cheese, grated: Adds a salty, nutty depth. Feel free to use Pecorino Romano for a sharper taste.
- 2 1/2 cups shredded cheddar cheese: The star ingredient for that gooey, melty goodness. A mix of sharp and mild gives a great flavor blend.
- 8 slices bacon, cooked and crumbled: The crispy topping lends a smoky, savory crunch. You can easily swap it with turkey bacon or omit for a vegetarian version.
- 1/4 cup green onions, sliced: Provides a fresh, mild onion flavor that brightens the dish; use them for garnish as well.
- Cooking spray: To prevent sticking; you can use butter to grease your baking dish too.
How to Make Cauliflower Casserole
Preheat and Prepare: Start by preheating your oven to 350°F (175°C). Grease a 9×13-inch baking dish with cooking spray to ensure your casserole comes out easily, and then set it aside as you prepare the filling.
Cook Cauliflower: If you haven’t cooked your cauliflower, boil or steam the florets in a pot until they are tender, about 5-7 minutes. Drain and set aside. You want them soft, but not mushy, so keep an eye on them.
Sauté Garlic: In a large saucepan, melt the butter over medium heat and add the minced garlic. Sauté for about 1 minute, or until fragrant; this step helps release the flavorful oils into the butter.
Create the Sauce: Sprinkle the flour into the butter and garlic mixture, whisking constantly for about 1 minute. Slowly pour in the milk, whisking until the mixture is smooth. Continue to cook, stirring frequently, until the sauce thickens and bubbles, about 5-7 minutes.
Season it Up: Remove the sauce from heat, then stir in the salt, pepper, parmesan cheese, and 2 cups of the cheddar cheese until it melts into a creamy mixture. This adds an irresistible taste to your casserole.
Combine Ingredients: Gently fold the cooked cauliflower into the cheesy sauce until it’s well coated. The comforting aroma at this point will make you want to dig right in!
Add Bacon and Onions: Stir in the crumbled bacon and half of the green onions. This combination brings a savory depth to the dish. Once mixed, transfer the mixture into your prepared baking dish, spreading it out evenly.
Topping Time: Sprinkle the remaining cheddar cheese on top of the cauliflower mixture, followed by a generous garnish of green onions and extra crumbled bacon. This will give your casserole a beautiful, appetizing look.
Bake Until Golden: Place the dish in your preheated oven and bake for 25-30 minutes, or until the top is bubbly and golden brown. It’s an excellent cue for when that cheesy goodness is ready to be enjoyed!

Storing & Reheating
Once the Cauliflower Casserole has cooled, you can store leftovers in an airtight container at room temperature for up to two hours before refrigerating them. In the refrigerator, keep it for up to 3-4 days. If you want to freeze it, wrap the casserole tightly with plastic wrap and store it in a freezer-safe container for up to 3 months. To reheat, simply pop your casserole back in a 350°F oven for about 20 minutes or until warmed through. Just a note: the texture might soften a bit, but adding a sprinkle of fresh cheese or green onions will brighten it up.
Chef’s Helpful Tips
- Avoid overcooking your cauliflower to keep it from becoming mushy in the casserole.
- For extra creamy sauce, consider adding a touch of cream cheese or Greek yogurt for richness.
- If you’re looking for more flavor, try roasting the cauliflower first to bring out sweetness before adding it to the casserole.
- Timing is key; have all your ingredients prepped before you start cooking to streamline the process.
- Make-ahead option: Assemble the casserole up to a day in advance and store it in the fridge before baking.
As you gather your family around for this delightful dish that showcases the humble yet versatile cauliflower, remember—it’s all about enjoying the journey of cooking together and making cherished memories. The Cauliflower Casserole isn’t just a recipe; it’s an invitation to savor life’s delicious moments.
Recipe FAQs
Can I make this casserole ahead of time?
Absolutely! You can prepare the entire casserole a day in advance and store it in the refrigerator before baking. Just be sure to cover it tightly to keep it fresh. When you’re ready to bake, allow it to come to room temperature before popping it in the oven.
Can I use other types of cheese?
Of course! While cheddar and parmesan are classic, experimenting with different cheeses can add unique flavors to your casserole. Consider using gouda, Monterey Jack, or even a spicy pepper jack for a kick. Just ensure they melt well!
What’s the best way to reheat leftovers?
Reheating in the oven at 350°F for 20 minutes is ideal to keep the casserole bubbly and delicious. If you’re in a hurry, you can also use the microwave; just be sure to cover the dish to retain moisture.
Can I make this dish vegetarian?
Certainly! The casserole is easily adaptable. Simply skip the bacon and substitute with sautéed mushrooms or extra veggies for added texture and flavor. You won’t miss the meat one bit!
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📖 Recipe Card

Cauliflower Casserole
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Total Time: 50 minutes
- Yield: 8 servings 1x
- Category: Side Dish
- Method: Baking
- Cuisine: American
Description
This Cauliflower Casserole features tender cauliflower in a creamy, cheesy sauce topped with crispy bacon, making it perfect for cozy dinners and gatherings.
Ingredients
- 6 cups cauliflower florets, cooked
- 3 tablespoons butter
- 1 tablespoon garlic, minced
- 3 tablespoons all-purpose flour
- 2 cups milk (whole milk recommended)
- Salt and pepper to taste
- 1/2 cup parmesan cheese, grated
- 2 1/2 cups shredded cheddar cheese
- 8 slices bacon, cooked and crumbled
- 1/4 cup green onions, sliced
- Cooking spray
Instructions
- Preheat oven to 350°F (175°C) and grease a 9×13-inch baking dish.
- Boil or steam cauliflower florets until tender, about 5-7 minutes; drain.
- Melt butter in a saucepan, add garlic, and sauté for 1 minute.
- Whisk in flour, then gradually pour in milk, stirring until thickened.
- Remove from heat and stir in salt, pepper, parmesan, and cheddar cheese until melted.
- Fold in cooked cauliflower, bacon, and half of the green onions.
- Transfer to the prepared baking dish, top with remaining cheddar, green onions, and bacon.
- Bake for 25-30 minutes until bubbly and golden.
Notes
You can use gluten-free flour and dairy-free cheese for dietary restrictions.
Pre-cook cauliflower carefully to avoid mushiness in the final dish.
Assemble the casserole in advance and refrigerate before baking.
Nutrition
- Serving Size: 1 serving
- Calories: 350
- Sugar: 3g
- Sodium: 600mg
- Fat: 24g
- Saturated Fat: 14g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 24g
- Fiber: 3g
- Protein: 15g
- Cholesterol: 60mg





