Creamy Cauliflower Casserole with Golden Breadcrumb Topping
If you are looking for a comforting, crowd-pleasing dish that feels indulgent but sneaks in a wholesome vegetable, this creamy cauliflower casserole is exactly what you need. Tender cauliflower florets are smothered in a rich, cheesy cream sauce and then topped with a buttery, golden breadcrumb crust that bakes up perfectly crisp. It is the kind of dish that disappears fast at potlucks, family dinners, and holiday tables alike.
What makes this casserole so special is the contrast between the silky, savory filling underneath and that irresistible crunchy topping. Every bite is pure comfort food at its finest. Let us walk you through exactly how to make it.
Ingredients
- 1 large head of cauliflower, cut into bite-sized florets
- 3 tablespoons unsalted butter
- 3 cloves garlic, minced
- 3 tablespoons all-purpose flour
- 2 cups whole milk
- 1 cup heavy cream
- 1 and 1/2 cups shredded sharp cheddar cheese
- 1/2 cup grated Parmesan cheese
- 1 teaspoon onion powder
- Salt and black pepper to taste
- 1 and 1/2 cups coarse breadcrumbs or panko
- 3 tablespoons melted butter (for topping)
- 1/4 cup grated Parmesan (for topping)
Method
- Preheat your oven to 375 degrees Fahrenheit (190 degrees Celsius). Lightly grease a 9×13 inch baking dish and set aside.
- Bring a large pot of salted water to a boil. Add the cauliflower florets and blanch for about 4 to 5 minutes until just slightly tender. Drain well and pat dry, then spread them into the prepared baking dish.
- In a medium saucepan over medium heat, melt the 3 tablespoons of butter. Add the minced garlic and cook for about 1 minute until fragrant.
- Whisk in the flour and stir constantly for about 1 to 2 minutes to cook out the raw flour taste.
- Slowly pour in the milk and heavy cream, whisking continuously to prevent lumps. Cook over medium heat, stirring often, until the sauce thickens, about 5 to 7 minutes.
- Remove the saucepan from heat and stir in the shredded cheddar, 1/2 cup Parmesan, onion powder, salt, and pepper until the cheese is fully melted and the sauce is smooth.
- Pour the creamy cheese sauce evenly over the cauliflower in the baking dish, gently stirring to coat all the florets.
- In a small bowl, combine the breadcrumbs, melted butter, and the remaining 1/4 cup Parmesan. Mix until the breadcrumbs are evenly coated.
- Sprinkle the breadcrumb mixture evenly over the top of the casserole, covering it from edge to edge.
- Bake uncovered for 25 to 30 minutes, or until the topping is deep golden brown and the sauce is bubbling around the edges.
- Remove from the oven and allow to rest for 5 minutes before serving. Enjoy warm straight from the dish.
Tips for the Best Results
Make sure to dry the blanched cauliflower thoroughly before adding the sauce. Excess moisture can make the casserole watery. If you want extra crunch on top, broil the casserole for the last 2 to 3 minutes of baking, keeping a close eye so the topping does not burn. You can also add cooked crumbled bacon or diced jalapeños into the filling for a flavor twist your family will love.
Make It Ahead
This casserole is a wonderful make-ahead dish. Assemble everything up to the breadcrumb topping, cover tightly with plastic wrap, and refrigerate for up to 24 hours. When you are ready to bake, add the breadcrumb topping and pop it straight into the oven, adding about 5 to 10 extra minutes to the baking time since it will be cold from the fridge.
