Bring the milk to the boil, add the rice, lemon slice and a pinch of salt. Leave to swell for 30 minutes over low heat, stirring occasionally. Stir in cream, swell for another 15 minutes.
Pour into four ovenproof moulds. Sprinkle with sugar and spread butter in small flakes on top. Bake in the preheated oven (electric cooker: 225 °C/ convection oven: 200 °C/ gas: level 4) for five to eight minutes.
Drain the apricots, dice them and spread them over the food.