Sloppied Flank Steak Sandwiches

Details

Ingredients

• 1 ½ pounds beef flank steak
• 1 tablespoon steak seasoning (such as Montreal Steak Seasoning®)
• 1 tablespoon olive oil
• ¼ cup brown sugar
• 1 small onion, chopped
• 1 small red bell pepper, chopped
• 1 tablespoon apple cider vinegar
• 1 tablespoon Worcestershire sauce
• 2 cups tomato sauce
• 2 tablespoons tomato paste
• 6 hamburger buns, split and toasted