Ingredients

Steps

• Combine the burger ingredients in a mixing bowl and shape into four equal-sized patties.
• Preheat the grill to a high heat.
• Cook the patties under the grill for 15 minutes, turning once.
• Place a cheese slice on each burger during the final minutes of cooking.
• Mix the mayonnaise and shredded lettuce together in a small bowl.
• Halve the ciabatta rolls and toast both sides under the grill.
• Spread the lettuce and mayonnaise mixture on the bottom rolls and add a tomato slice.
• Place the burger patty on the roll, add red onion, and cover with the top half of the bun.