Meatloaf Sandwiches

Name: Meatloaf Sandwiches
Ingredients: Nonstick cooking spray; 1 tablespoon olive oil; 1/2 medium yellow onion, diced (about 3/4 cup); 1 bay leaf; 1 clove garlic, minced; 1 medium red bell pepper, finely diced (about 1 cup); 2 tablespoons chopped fresh flat-leaf parsley; 2 teaspoons chopped fresh thyme; 2 pounds lean ground beef; 2 large eggs, lightly beaten; 3/4 cup dry breadcrumbs; 1 tablespoon Worcestershire sauce; 1 cup ketchup; Kosher salt and freshly ground black pepper; 1/4 cup mayonnaise; 1 loaf thick-sliced white bread