1. In a bowl, place all the ingredients for the mince and mix well. Cut a large piece of non-stick parchment paper and sprinkle the middle of its long side with breadcrumbs. Place half of the mince on top. Crumble the halloumi cheese in the middle and slice the cherry tomatoes in half and spread them over the cheese. Sprinkle with oregano (the recipe uses 'rigani' which is oregano, but the ingredient list used 'artysia' for cumin earlier, so I'm assuming the instruction meant oregano/thyme here, but sticking to the context of the original instruction which seems to imply a herb for sprinkling). Place the remaining mince on top and shape into a roll. Sprinkle the entire roll with the remaining breadcrumbs.
2. Wrap the parchment paper tightly and twist the ends like a candy wrapper to seal it well.
3. If the parchment paper isn't large enough, cut another large piece. Place the mince roll in a baking pan.
For the Potatoes:
1. Peel the potatoes, rinse them, and cut them in half if they are small, or into quarters if they are larger. Place them in a large bowl and add the olive oil, thyme, spice mix (cumin), curry powder, salt, and pepper. Mix well and place the potatoes in the baking pan around the sides of the mince roll. Carefully pour in the water.
2. Bake in a preheated oven at 200°C (392°F) for 1 hour. Take it out of the oven, open the parchment paper slightly, and continue baking for another 20 minutes so the roll browns nicely.
3. Remove the parchment paper completely and continue baking for another 20 minutes until the entire dish is nicely browned.