Cauliflower au Gratin

Ingredients

• 1 head cauliflower , cut into florets
• 2 tablespoons butter
• 1 small onion , chopped
• 2 tablespoons all-purpose flour
• 1 cup milk
• 6 ounces shredded Cheddar cheese , divided
• 1 pinch ground black pepper
• 1 pinch ground nutmeg , or to taste

Instructions

1. 1

   Place a steamer insert into a saucepan and fill with water to just below the bottom of the steamer. Bring water to a boil. Add cauliflower, cover, and steam until tender, 5 to 7 minutes.

2. 2

   Preheat the oven to 350 degrees F (175 degrees C). Grease a 9x9-inch baking dish.

3. 3

   Heat butter in a small saucepan over low heat; cook and stir onion in the melted butter until softened, about 5 minutes. Add flour; cook, stirring constantly, until mixture just starts to brown, 3 to 5 minutes. Gradually pour milk into mixture, whisking into a smooth sauce. Cook until just simmering.

4. 4

   Remove sauce from heat and stir in half the Cheddar cheese until melted; sprinkle with pepper and nutmeg.

5. 5

   Place steamed cauliflower in the prepared baking dish; pour cheese sauce over cauliflower. Sprinkle with remaining Cheddar cheese.

6. 6

   Bake in the preheated oven until cheese is melted and browned, about 25 minutes.