Holiday Shepherd's Pie | Cooking Professionally

Ingredients

• 2 pounds sweet potatoes, skin-on and cut into thirds
• 4 tablespoons unsalted butter, softened
• 1/4 cup parmesan cheese, grated, plus more, to taste, shredded for garnish
• 1 teaspoon kosher salt, plus more, to taste
• 1/2 teaspoon black pepper, plus more, to taste
• 1 pound ground pork sausage, can substitute ground beef or half ground beef and half ground pork sausage
• 1 tablespoon olive oil
• 1 medium yellow onion, chopped
• 2 cups mushrooms, chopped
• 3 cloves garlic, minced
• 1 cup beef broth
• 1 1/2 cups canned crushed tomatoes
• 1 teaspoon dried rosemary
• 1 teaspoon Worcestershire sauce
• 1 cup frozen corn
• 1 cup frozen peas and carrots mix
• fresh rosemary leaves, optional, to taste, for garnish