Puree the kidney beans, rinsed with cold water and drained well, together with the milk, then add the remaining ingredients and mix everything together well.
Fill the dough into the muffin pan (preferably made of silicone, otherwise grease well) and bake at 175 ° C in the preheated oven for about 15 - 17 minutes.
Makes nine light and airy muffins that are still nice and juicy on the inside.