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A spoonful of cauliflower au gratin being lifted from a baking dish

Cauliflower au Gratin

This cauliflower au gratin is super rich and ultra cheesy. It'll become a family favorite in no time! Perfect for the holidays, the cauliflower is roasted for a delicious side dish that's all creamy and not watery!
Prep: 55 minutes
Cook: 10 minutes
Total: 1 hour 5 minutes
Yield:8 servings

Ingredients

  • 8 cups cauliflower florets about 2 medium heads or 1 large, about 2 pounds in total
  • salt to taste
  • 1 small onion chopped
  • 6 tablespoons unsalted butter ½ stick, divided
  • 4 tablespoons all-purpose flour
  • 2 cups hot milk
  • 1 teaspoon salt
  • ½ teaspoon black pepper freshly ground
  • 2 cups shredded cheese like Gruyere or cheddar
  • ¼ cup parmesan freshly grated
  • ¼ cup breadcrumbs

Instructions

  • Preheat oven to 375º F and grease a 9x9-inch or 2 quart baking dish. Place cauliflower on baking sheet and roast for 20 minutes. Heat 4 tablespoons butter in a small saucepan over low heat. Add onion and stir until softened, about 5 minutes.
  • Add flour to saucepan and cook while stirring constantly until mixture just starts to brown, about 3 to 5 minutes. Gradually pour milk into mixture, whisking into a smooth sauce. Stir in salt and lots of pepper. Cook until just simmering. Remove sauce from heat and stir in half the shredded Gruyere or cheddar cheese until it melts.
  • Place roasted cauliflower in the prepared baking dish and pour cheese sauce over.
  • Sprinkle cauliflower and cheese sauce with remaining Gruyere or cheddar cheese and 1/4 cup parmesan, if desired. Melt remaining 2 tablespoons butter and stir together with breadcrumbs and a pinch of salt.
  • Bake in the preheated oven until cheese is melted and browned, about 20 minutes. Remove from oven and sprinkle with breadcrumbs. Return to oven for 5-10 minutes or until bubbly. Sprinkle parmesan over with cheese after cooking and serve.

Notes

  • Shredded Cheese: We prefer cheddar, but Gruyere, swiss, and white cheddar are also good options.
  • Cauliflower: Use fresh cauliflower instead of frozen. Frozen will make your cauliflower au gratin way too watery.
  • Make it Gluten Free: Use gluten free breadcrumbs and gluten free all-purpose flour.

Nutrition

Serving Size: 1serving | Calories: 267kcal | Protein: 12g | Fat: 18g | Saturated Fat: 11g | Cholesterol: 53mg | Sodium: 599mg | Potassium: 427mg | Total Carbs: 15g | Fiber: 3g | Sugar: 6g | Net Carbs: 12g | Vitamin A: 575IU | Vitamin C: 49mg | Calcium: 281mg | Iron: 1mg
Recipe By:Cheryl Malik