Cauliflower "Mac" and Cheese

Bahan-bahan (6 porsi)

• 8 cups 1-inch cauliflower florets (about 2 small heads or 28 ounces florets)
• 2 tablespoons unsalted butter
• 2 tablespoons all-purpose flour
• 1 1/2 cups whole milk (2% also works; use part half-and-half for a richer flavor)
• 1 teaspoon Dijon mustard
• 1/2 teaspoon kosher salt
• 1/2 teaspoon coarsely ground black pepper
• 1/4 teaspoon garlic powder
• 1/8 to 1/4 teaspoon cayenne pepper
• 6 ounces FRESHLY SHREDDED extra sharp cheddar cheese (about 1 1/2 cups (Do not use pre-shredded! It won’t melt smoothly.))
• 1/2 cup full-fat Greek yogurt
• 3 tablespoons unsalted butter
• 3/4 cup whole-wheat panko breadcrumbs or regular panko
• 1/2 cup grated Parmesan cheese