Melissa Clark's Carroty Mac and Cheese — Three Many Cooks

Ingredients

• 2 cups whole wheat macaroni
• 2½ cups coarsely grated carrot (about 8 small)
• 3 cups grated sharp cheddar cheese
• ¼ cup (1/2 stick) unsalted butter, cut into pieces
• ¾ cup sour cream
• ¼ cup whole milk
• 2 large eggs
• 1 teaspoon kosher salt
• ¾ teaspoon mustard powder
• ¼ teaspoon freshly ground black pepper
• ¼ cup finely grated parmesan cheese