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A spoonful of cheesy broccoli cauliflower casserole showing long cheese pulls, topped with golden breadcrumbs.

Creamy Ultimate Cheesy Broccoli Cauliflower Casserole


  • Author: Alexander Knight
  • Total Time: 40 min
  • Yield: 6 servings
  • Diet: Vegetarian

Description

Make this rich and creamy broccoli cauliflower casserole featuring a homemade cheddar cheese sauce and a crisp topping. It is a simple side dish perfect for weeknights or holiday meals.


Ingredients

Scale
  • 2 cups fresh broccoli florets
  • 2 cups fresh cauliflower florets
  • 4 tablespoons unsalted butter
  • 4 tablespoons all-purpose flour
  • 2 cups whole milk, warmed
  • 1 teaspoon Dijon mustard
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 2 cups sharp cheddar cheese, shredded
  • 1/2 cup Panko breadcrumbs
  • 1 tablespoon melted butter
  • 1/2 teaspoon garlic powder


Instructions

  1. Preheat your oven to 375 degrees Fahrenheit. Lightly grease an 8×8 inch baking dish.
  2. Steam the broccoli and cauliflower florets until they are tender-crisp, about 5 to 7 minutes. Drain them well and set them aside.
  3. Make the cheese sauce: In a medium saucepan over medium heat, melt 4 tablespoons of butter. Whisk in the flour and cook for one minute, stirring constantly.
  4. Gradually whisk in the warm milk until the mixture thickens, about 3 to 5 minutes. Remove the pan from the heat.
  5. Stir in the Dijon mustard, salt, and pepper. Add the shredded cheddar cheese, stirring until the cheese melts completely and the sauce is smooth.
  6. Gently fold the steamed vegetables into the cheese sauce until they are fully coated. Pour the mixture into the prepared baking dish.
  7. Prepare the topping: In a small bowl, combine the Panko breadcrumbs, 1 tablespoon of melted butter, and garlic powder. Sprinkle this mixture evenly over the casserole.
  8. Bake for 20 to 25 minutes, or until the topping is golden brown and the casserole is bubbly. Let it rest for 5 minutes before serving.

Notes

  • For a low-carb option, substitute the Panko breadcrumbs with crushed pork rinds or almond flour for the topping.
  • You can prepare the sauce and steam the vegetables a day ahead. Store them separately in the refrigerator and assemble before baking.
  • If you prefer a softer vegetable texture, steam the broccoli and cauliflower for an extra 2 minutes.
  • Prep Time: 15 min
  • Cook Time: 25 min
  • Category: Side Dish
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 serving
  • Calories: 310
  • Sugar: 4
  • Sodium: 450
  • Fat: 22
  • Saturated Fat: 13
  • Unsaturated Fat: 9
  • Trans Fat: 0
  • Carbohydrates: 18
  • Fiber: 4
  • Protein: 14
  • Cholesterol: 65
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