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+ servings
A baking pan full of cheese cauliflower.

Broccoli and Cauliflower Gratin

This broccoli and cauliflower au gratin is cheesy vegetable perfection. It's easy enough for a weeknight, but delicious enough for the holidays and it's always gobbled up. Big thanks to Roth for sponsoring this post.
Course Side Dish
Cuisine American
Keyword easy side dish recipes, kid-friendly recipes, weeknight dinner recipes
Prep Time 10 minutes
Cook Time 35 minutes
Total Time 45 minutes
Servings 8 servings
Calories 204kcal


  • 1 pound broccoli florets
  • 1 pound cauliflower florets
  • 4 tablespoons butter divided
  • 2 cloves garlic minced
  • 3 tablespoons flour
  • 1 1/2 teaspoons salt
  • 2 teaspoons ground pepper
  • 1 1/2 cups whole milk
  • 6 ounces Roth Original Havarti Cheese grated
  • 1/4 cup Panko bread crumbs
  • 1 tablespoon chopped parsley


  • Preheat oven to 350 degrees. Butter the bottom and sides of a 9x13 baking dish with one tablespoon of butter.
  • Add the broccoli and cauliflower to the buttered dish and sprinkle with 1/2 teaspoon of salt and 1 teaspoon pepper.
  • Bake for 20 minutes, stirring once halfway through.
  • Start the cheese sauce when the vegetables have 8 minutes left to bake.
  • To make the cheese sauce, melt the remaining 3 tablespoons of butter in a medium sauce pan.
  • Add the garlic to the melted butter and cook, stirring constantly, for 1 minute.
  • Whisk in the flour, remaining teaspoon of salt, and remaining teaspoon of pepper. Cook for 1 minute.
  • Slowly add the milk to the flour mixture, whisking constantly. Cook, whisking constantly, for 4-5 minutes or until mixture reaches the consistency of a thin gravy.
  • Remove from the heat and whisk in the grated Roth Original Havarti Cheese until the sauce is smooth and creamy.
  • Remove the vegetables from the oven and stir. Pour the cheese sauce evenly over the vegetables and sprinkle the top with the Panko bread crumbs.
  • Return to the oven for 10 minutes.
  • Place the pan under the broiler and broil until the bread crumbs are browned, about 2 minutes.
  • Remove from the oven, sprinkle with parsley, and serve.


Calories: 204kcal | Carbohydrates: 13g | Protein: 10g | Fat: 13g | Saturated Fat: 8g | Cholesterol: 38mg | Sodium: 716mg | Potassium: 430mg | Fiber: 2g | Sugar: 4g | Vitamin A: 815IU | Vitamin C: 78.9mg | Calcium: 229mg | Iron: 1mg