With a mixer, shake butter, sugar and egg yolks with high speed until light and creamy + nutella
Replace with a spiral mixer whisk, or it can also stir with a spatula. Add the flour that has been sifted, stir well until it is smooth and then enter the filling. Mix well then continue stirring with the spatula until the mixture is completely mixed.
Take the mixture according to taste and fill it with marsmallow then round shape. Arrange on a baking sheet that has been thinned with butter / oil. Arrange it not too tightly because cookies will spread. Give the topping on the entire surface of the dough ball, press the toppings slightly so they stick.
Bake 180C for 5-10 minutes for chewy results (check each oven)
When freshly cooked, cookies are still soft. So leave it first in the pan until it's a little hard, then move it to the cooling rack. Wait until it is completely cold and then put into the jar.
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@rerycore