Roasted Cauliflower Mac and Cheese

Bahan-bahan (6 porsi)

• 1 large head of cauliflower (about 3 pounds before chopping), chopped into florets
• 1 tablespoon olive oil
• 2 teaspoons smoked paprika
• 1 teaspoon garlic powder
• fine sea salt and freshly-cracked black pepper
• 1/2 cup Panko breadcrumbs
• 12 ounces uncooked pasta (I used shells)
• 3 tablespoons butter
• 3 large cloves garlic, pressed or finely minced
• 1/4 cup all-purpose flour
• 2 1/2 cups whole milk
• 8 ounces freshly-grated sharp cheddar or gruyere
• 1 ounce freshly-grated Parmesan
• (optional) chopped fresh chives or parsley, for garnish