How to make
Sift the flour into a bowl with the baking powder, add baking soda and salt. With the mixer, mix peanut butter with two tablespoons of butter and sugar until creamy and smooth.
In another bowl, beat the egg and add it to the butter together with yogurt. Mash the bananas and mix in the oats. Begin to add them to the eggs, yogurt and peanut butter, stirring constantly.
From the resulting dough, form small cookies, roll them in chopped walnuts and put them in a greased baking dish. Bake until lightly tanned.
