Gina's Turkey Meatloaf

INGREDIENTS

• 2 tablespoons olive oil
• Kosher salt and freshly ground black pepper
• 8 ounces mushrooms, finely chopped
• 1 egg, lightly beaten
• 6 ounces crumbled blue cheese
• 1 large Vidalia onion, chopped
• 1 tablespoon Worcestershire sauce
• Pinch red pepper flakes
• 2 cloves garlic, chopped
• 1/2 cup panko (Japanese) breadcrumbs
• 1 (8-ounce) can tomato sauce
• 1 shallot, sliced
• 2 pounds ground turkey
• 1/4 cup chicken stock