For the filling, chop approx. 25 g almonds and roast them in a pan without fat. Take out and let cool down
Mix marzipan, egg white, roasted almonds and rum raisins with the whisks of the hand mixer. Wash apples, grate them dry and cut off a lid. Cut out the cores with a ball cutter. Spread the marzipan nut filling in it. Pierce apples all around with a shish kebab. Carefully insert about 40 g almond slivers
Place apples in an ovenproof casserole dish and bake in a preheated oven (electric oven: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 40 minutes. Cover the marzipan filling with the lid and aluminium foil after half the baking time