Preheat oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see manufacturer). Roast the almonds in a pan without fat until golden brown and take them out. Chop the chocolate. Mix flour, sugar, vanilla sugar, baking soda and baking powder.
Mix soy drink and oil. Stir the flour mixture into the soy drink mixture with the whisks of the mixer. Peel the bananas. First halve lengthwise and then cut crosswise into slices. Stir the almonds and chocolate into the dough.
Put the dough into a greased ring cake tin (2 1⁄2 l capacity) and smooth it down. Bake in a hot oven for about 1 hour (test with sticks, the cake should still be moist). Take out and let cool down.
Carefully turn out of the mould and let it cool down.
For the glaze, halve the avocado, remove the core and remove the flesh from the skin. First mash with a fork, then puree finely with approx. 150 ml water and cocoa using a hand blender. Melt the coconut oil.
Stir into the avocado cream. Cover the cake with it. Chill for about 30 minutes.