Filled with stir-fried prawns (large shrimp) and a mixture of crisp, colourful vegetables, these tartlets make a good light snack or starter. The pastry cases can be made ahead.
*For vegetarians, replace the prawns with 300 g cubed, chilled tofu. Add at the end of step 3; stir-fry for 2–3 minutes.
*Replace the pak choy with other leafy greens such as shredded Chinese leaves or baby spinach.