Bagel Burger | RICARDO

Ingredients

• 3 onions, thinly sliced
• 3 tablespoons (45 ml) butter
• 1 lb (454 g) sliced beef fondue
• 2 tablespoons (30 ml) olive oil
• 1 tablespoon (15 ml) soy sauce
• 1 tablespoon (15 ml) Worcestershire sauce
• Cream cheese
• 4 bagels, halved and toasted
• Whole-grain mustard