Cheeseburger Recipe With Caramelised Onions

Ingredients

• 500g of beef mince
• 1 onion, peeled and diced
• 2 garlic cloves
• 1 free-range egg, lightly beaten
• 50g of brown breadcrumbs
• 2 tbsp of flat-leaf parsley, chopped
• 2 tbsp of tarragon, chopped
• 1 tbsp of tomato purée
• 2 tbsp of soy sauce
• 2 tbsp of tomato ketchup
• 1/2 tsp black pepper, freshly ground
• 1/2 tsp salt
• vegetable oil
• 25g of unsalted butter
• 3 onions, peeled and sliced
• 1 tbsp of thyme, just the leaves
• 4 slices of Emmental
• 2 ciabatta loaves, halved horizontally
• 4 tbsp of hummus
• 2 tbsp of extra virgin olive oil
• 4 handfuls of rocket