Peel the two bananas and place in a mixing bowl. Now mash the bananas with a fork and add 1.5-2 cups of fruit muesli (or other muesli). Stir everything well with a spoon.
Line a baking sheet with parchment paper and use two tablespoons to place about 8 biscuits on the sheet. Now bake in the hot oven for about 15 minutes and let cool down well.