Gochujang Meatloaf

Name: Gochujang Meatloaf
Ingredients: Cooking spray; 1 small yellow onion (about 6 ounces); 1 small carrot (about 2 ounces); 1 medium stalk celery; 4 cloves garlic; 1 tablespoon unsalted butter; 2 tablespoons gochujang ( Korean red pepper paste ); 1 tablespoon soy sauce; 1 teaspoon Worcestershire sauce; 4 ounces fresh shiitake mushrooms; 1/4 medium bunch fresh parsley; 1/4 cup grated Parmesan cheese; 2 cups panko breadcrumbs; 1 pound ground pork; 1 pound ground beef; 2 large eggs; 1/4 cup heavy cream; 1 teaspoon kosher salt; 1/4 teaspoon freshly ground black pepper; 1/2 cup gochujang (Korean red pepper paste); 1/4 cup packed light or dark brown sugar; 2 teaspoons toasted sesame oil