Place the dough sheets next to each other and let them thaw. Bring orange juice, brown sugar, cinnamon stick and aniseed star to the boil and simmer for about 5 minutes. Peel oranges so that the white skin is removed.
Cut oranges into slices and simmer in the stock for 2-3 minutes. Remove from the heat and leave the oranges in the stock.
For the cinnamon crumbles, use your hands to mix flour, sugar, butter in pieces and cinnamon into crumbles.
Preheat oven (electric cooker: 225 °C/circulating air: 200 °C/gas: see manufacturer). Line a baking tray with baking paper. Roll up the puff pastry corners slightly so that circles of dough form, place on the baking tray. Place orange slices with 2-3 tbsp. brew each on the dough pieces, spread cinnamon crumbles on top.
Bake in a hot oven for about 10 minutes. Serve hot or cold with vanilla ice cream.