Cauliflower Gratin - Master recipes

Ingredients

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