Put the ingredients for the base in a bowl and knead with your hands. Now place the dough on a baking sheet lined with baking paper and roll it out with a glass. The best thing to do is to sprinkle a little flour over the dough, then it rolls better and nothing sticks to the glass. If necessary, peel the desired fruit and cut into small pieces and place on the base. Now put the ingredients for the crumble in a bowl and knead. Then spread the crumble on the cake.
Now bake at about 180 degrees for 30-35 minutes until the crumble is golden brown.