1.Combine chicken, curry paste, yoghurt, garam masala and garlic in a large bowl. Cover and refrigerate for 15 minutes.
2.Heat oil in a medium saucepan. Add chicken mixture; cook, stirring, for 5 minutes or until browned. Stir in tomato puree; bring to the boil. Reduce heat; cook, covered, for 20 minutes or until chicken is cooked through and sauce is thickened. Stir in cream and coriander; simmer for a further 5 minutes. Season to taste. Cool.
3.Lightly grease and preheat a 4-hole (¾-cup/180ml) pie maker.
4.Line prepared holes with two roti squares, overlapping slightly; trim hard edges with scissors. Spoon ⅔ cup butter chicken into each roti case. Top with roti squares; press edges firmly to seal. Sprinkle with flaked almonds. Close lid; cook for
8 minutes or until roti is golden.
Before using the roti, flatten the bread with a rolling pin. You can use garlic naan instead if you prefer. To make these in a smaller pie maker, see page 7 for information on how much filling they hold, then adjust accordingly. Butter chicken will keep frozen for up to 3 months. Thaw in the fridge overnight before using.