Steakhouse Burger Sloppy Joes

Name: Steakhouse Burger Sloppy Joes
Cuisine: American
Ingredients: 1 lb ground beef (or ground steak); 1 tablespoon olive oil; 1 small onion, finely chopped; 2 cloves garlic, minced; 1/4 cup steak sauce (like A1 or similar); 1/4 cup ketchup; 2 tablespoons Worcestershire sauce; 1 tablespoon Dijon mustard; 1/4 cup beef broth; Salt and pepper to taste; 4 burger buns; 1 cup shredded cheddar cheese (optional); 1/4 cup sliced pickles (for garnish); 1/4 cup crispy fried onions (for garnish)