Use up leftovers to create this quick and tasty lunch recipe.
Place the base of each bun on a work surface, cut side up. Layer each bun base evenly with lettuce onion, tomato, cucumber, coriander and avocado; top with sliced beef and drizzle with kecap manis and chilli sauce, if you like. Top with remaining bun half.
Wrap each bun in baking paper and secure in plastic wrap to enclose. Transfer to a large Tupperware container and you are ready to go.
RECIPE NOTES & TIPS: