Take a banana and peel it, break it into pieces and mash it with a fork. Then transfer to a tall container. Then add the egg, honey and oat milk with almond. Mix / stir everything together well.
Place the oatmeal, baking powder and whole milk chunks in an extra bowl and mix. Then stir everything together. Now take a bowl with a high rim and grease it with rapeseed oil. Pour the stirred mixture into the greased bowl.
Now you put the whole thing in a microwave. Bake at 750 watt for about 2 minutes. If the dough is liquid in the middle, then pour in again for 30 seconds and bake. I don't have 750 watts in my microwave, but 800 watts and let it bake for about 4 minutes. (possibly make a wooden stick sample)
Take a dessert plate and top it with the bowl cake. Now decorate the whole thing with a few whole milk chunks and a few banana slices. The whole thing can be served warm or lukewarm.