Broccoli Gratin - cooking recipe

Ingredients

5 tablespoons butter
3 tablespoons flour
1 1/2 cups whole milk
1 1/2 teaspoons kosher salt
1 pinch ground nutmeg
ground black pepper
8 cups broccoli florets
1 cup grated sharp cheddar cheese
1/2 cup fresh breadcrumb

Preparation

Preheat oven to 450 degrees. Use 1 tablespoon butter to butter a 9x9 or 9x13 baking dish.
Steam broccoli until crisp-tender, about 5 minutes.
Melt 3 tablespoons of the butter in a medium saucepan. Whisk in the flour until smooth. Cook, stirring, for 1 minute.
Add the milk, salt, and nutmeg and bring to a boil while stirring constantly. Lower heat and simmer, stirring occasionally, until the white sauce is thickened, about 10 minutes. Season with pepper.
Put the broccoli in the prepared baking dish. Sprinkle with half of the cheese and pour on the white sauce. Cover with the remaining cheese.
Melt the remaining 1 tablespoon butter in a small skillet. Add the bread crumbs and cook, stirring, until lightly browned.
Cover the gratin with the breadcrumbs. Bake at 450 for about 20 minutes, or until lightly browned and bubbly.