Moroccan Black Bean Burgers

• 400 g tin black bean tin, drained and rinsed
• 2 tsp Moroccan spice
• .6 cup wholegrain bread crumbs
• 1 egg
• 1 tbsp extra virgin olive oil
• 1 avocado, peeled and mashed
• 1 tomato, sliced
• 1 small cos lettuce
• .5 cup tomato relish
• 3 wholemeal bread rolls