Ingredients for - Cauliflower Gratin

1. 1 large head cauliflower, cut into florets
2. 2 tablespoons olive oil
3. 1 teaspoon salt, divided
4. 1 teaspoon pepper, divided
5. 4 tablespoons butter, cubed
6. 3 tablespoons all-purpose flour
7. 2 cups 2% milk
8. 1 cup shredded Swiss cheese
9. 1/2 cup grated Parmesan cheese
10. 1/2 teaspoon onion powder
11. 1/2 teaspoon ground mustard
12. 1/2 teaspoon Worcestershire sauce
13. 1/8 teaspoon cayenne pepper
14. Chopped fresh thyme, optional

How to cook deliciously - Cauliflower Gratin

1 . Stage

Preheat oven to 375°. Place cauliflower on a rimmed baking sheet. Drizzle with oil; sprinkle with 1/2 teaspoon salt and 1/2 teaspoon pepper. Toss to coat. Bake 8 minutes. Stir; bake until crisp-tender and lightly browned, 7-8 minutes longer.

2 . Stage

In a large saucepan, melt butter over medium heat. Stir in flour until smooth; gradually whisk in milk. Bring to a simmer, stirring constantly; cook and stir until thickened, 2-3 minutes. Remove from heat. Stir in next 6 ingredients and remaining 1/2 teaspoon salt and 1/2 teaspoon pepper until smooth.

3 . Stage

Pour 3/4 cup cheese sauce into a greased 2-qt. baking dish. Top with cauliflower and remaining cheese sauce. Bake, uncovered, until bubbly and lightly browned, 30-35 minutes. If desired, sprinkle with chopped fresh thyme.