Cauliflower and Brussels Sprout Gratin | Tasty Kitchen: A Happy Recipe Community!

Ingredients

• ¾ heads Cauliflower, Cut Into Florets
• ¾ pounds Brussels Sprouts, Trimmed, And Quartered Lengthwise Through Core
• 1 teaspoon Kosher Salt
• 4 Tablespoons Unsalted Butter, Divided
• 3 Tablespoons All-purpose Flour
• 2 cups Hot Milk
• ½ teaspoons Freshly Ground Black Pepper
• 1 pinch Ground Nutmeg
• ¾ cups Grated Gruyere, Divided
• ½ cups Grated Parmesan
• ¼ cups Bread Crumbs