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Broccoli au Gratin

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A creamy and comforting broccoli au gratin with tender florets in a rich cheese sauce, topped with a crispy golden breadcrumb layer.

  • Author: Sophia
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Total Time: 45 minutes
  • Yield: 6 servings
  • Category: Side Dish
  • Method: Broil
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

  • 2 (12-ounce) packages fresh broccoli florets (about 8 cups)
  • 3 tablespoons unsalted butter, divided
  • 1/2 cup chopped onion
  • 1 tablespoon chopped garlic
  • 1/4 cup all-purpose flour
  • 2 3/4 cups reduced-fat milk
  • 1 teaspoon dry mustard
  • 1 teaspoon Dijon mustard
  • 1/4 teaspoon salt
  • 1/8 teaspoon salt
  • 1/4 teaspoon ground black pepper
  • 1/8 teaspoon cayenne pepper (optional)
  • 3/4 cup shredded sharp white Cheddar cheese, divided
  • 3/4 cup shredded Gruyère cheese, divided
  • 1/4 cup panko breadcrumbs
  • 1/4 teaspoon salt-free garlic-and-herb seasoning
  • cooking spray

Instructions

  1. Preheat oven to broil and coat a baking dish with cooking spray.
  2. Boil broccoli florets for 5 to 6 minutes until tender, then drain well.
  3. Transfer broccoli to the prepared baking dish and spread evenly.
  4. Melt 2 tablespoons butter in a saucepan over medium heat. Add onion and cook until softened, then add garlic and cook briefly.
  5. Whisk in flour and cook for 1 minute to form a roux.
  6. Gradually whisk in milk. Add dry mustard, Dijon mustard, 1/4 teaspoon salt, black pepper, and cayenne if using.
  7. Cook until the sauce thickens, about 4 to 6 minutes.
  8. Remove from heat and stir in 1/2 cup Cheddar and 1/2 cup Gruyère until melted.
  9. Pour cheese sauce over broccoli.
  10. In a bowl, mix breadcrumbs, remaining butter (melted), remaining cheeses, remaining salt, and seasoning.
  11. Sprinkle topping evenly over the dish.
  12. Broil for 2 to 4 minutes until golden and bubbling.
  13. Let rest briefly before serving.

Notes

  • Use whole milk for a richer sauce.
  • Frozen broccoli can be used if thawed and well drained.
  • Add Parmesan to the topping for extra flavor.
  • Reheat in the oven to maintain crispness.
  • Can be assembled ahead and broiled before serving.

Nutrition

Find it online: https://savorymomskitchen.com/broccoli-au-gratin/