Beat the butter ( or margarine, spread) with the caramel and boiled condensed milk with a mixer for about two minutes. Add the eggs and mix well. If you do not have caramel, take only boiled condensed milk (250 g).
Add soda (slaked), salt and flour, knead the dough, put walnuts, chopped with a knife.
Spread the dough on silicone molds, bake at t=170-180 C for about 20 minutes.
Decorate as desired.
I mixed powdered sugar with water and lemon juice and sprinkled nuts on top.