Meatloaf with Caramelized Onions Recipe

Ingredients

• 1.5 pounds ground beef
• 0.5 pounds ground pork
• 0.5 cups panko breadcrumbs
• 0.25 cups whole milk
• 2 large yellow onion
• 2 tablespoons olive oil
• 3 cloves garlic cloves
• 1 large egg
• 0.25 cups ketchup
• 2 teaspoons Worcestershire sauce
• 1.5 teaspoons salt
• 0.5 teaspoons black pepper
• 1 teaspoons dried thyme
• 1 teaspoons brown sugar
• 2 teaspoons balsamic vinegar