Cap City Diner Meatloaf

Name: Cap City Diner Meatloaf
Ingredients: Meatloaf; 2 cups sliced shiitake mushrooms; 2 tablespoons diced white onions; 1 tablespoon olive oil; 1 lb ground beef; 4 ounces ground veal (optional); 10 ounces ground pork; 1 egg; 3⁄4 cup breadcrumbs; 1 1⁄2 teaspoons chopped fresh parsley; 1⁄2 teaspoon chopped fresh thyme; 1⁄2 teaspoon chopped fresh sage; 2 1⁄4 teaspoons minced garlic; 2 1⁄4 teaspoons heavy cream; 3⁄4 teaspoon Worcestershire sauce; 1 teaspoon salt; 1 teaspoon pepper; 2 tablespoons barbecue sauce (any will do, but Cap City Barbecue Sauce is recommended)