Do you have a lemon squeezer at home? Few people know this secret!

Famous cookies that melt in your mouth! Nice and easy with just a few ingredients! Quick and easy cookies!

Ingredients:
Egg - 1 pc
Sugar - 80 g
Butter - 180 g
Oil - 80 ml
Potato starch - 100 g
A little bit of salt
Flour - 400 g
Baking soda - 1 teaspoon
Make 12 balls

Filling:
Walnuts - 150 g
Condensed milk - 3 tablespoons
Bake for 20 - 25 minutes at 180°C