Ingredients:

Instructions:

Cook the asparagus in boiling water for 4-5 minutes until tender. Drain and cool, then cut the asparagus in half and set the tips aside. Preheat the grill or barbecue. Place the asparagus stalks in a food processor with the egg and blend to a smooth purée. Add all the remaining ingredients, except for the asparagus tips, season and pulse until combined. Divide the mixture into 4 and, with your BurgerMate, shape into burgers. Brush the burgers with a little oil and chill for 20 minutes. Cook for 6-8 minutes on each side until cooked through. Serve each burger in a Waitrose Old Fashioned Wholemeal Roll with iceberg lettuce, lemon mayonnaise and the reserved asparagus tips.