Vinarkekur (friendship cookies) - untested

A recipe from Randy, who has been exploring his Icelandic family connections for years, including in food. We received a boxful of Christmas treats through the mail in 2020 and these, in particular, were delicious. Fittingly named "friendship cookies" because we dearly love our friend Randy.

Cookie wafers
3 1/4 cups sifted flour (540 g) (+ 1/4 cup [40g] when kneading the dough)
1 cup almond flour (85 g)
2 tsp baking powder (6 g)
1 tblsp skim milk powder (7 g)
1 1/2 tsp ground cardamon (4 g)
1 cup softened butter (250 ml)
1 cup sugar (230 g)
1/2 cup milk (120 ml)
1/2 tsp vanilla (3 ml)
2 eggs
Butter icing filling
3/4 cup softened butter (190 ml)
1 tsp vanilla (5 ml)
2 1/4 cups sifted icing sugar (285 g)
1 1/2 tblsp (22 ml) room temperature milk or cream
1 tsp ground cloves (5 g)
1 1/2 tblsp ground cinnamon (10 g)

To make the cookie wafers:
1. In a large bowl, combine the dry ingredients (flour, almond flour, baking powder, skim milk powder, cardamon). Mix well.
2. In a medium bowl, cream together the butter and sugar. 
3. Add the eggs, milk and vanilla to the creamed butter/sugar and beat well.
4. Slowly add the wet ingredients to the dry ingredients, blending well.
6. Form the dough into a ball and knead until smooth. (You may need to add a bit of four, dough should be smooth).
7. Wrap the dough or place in a bowl and cover, then place the dough in the fridge for an hour (can even be left overnight).
8. Preheat the oven to 375F/190C.
9. Roll out the dough on a floured surface to a thinkness about an 1/8 of an inch (4 mm). (Divide the dough into 4 quarters to make rolling it out easier.)
10. Using a round cookie cutter (3 inch or 7 cm), cut out the cookies. (This will make approx 9 dozen cookie bases)
11. Place on baking sheets and bake for 9 to 10 min or until bottom of cookies start to brown.
12. Remove from the oven and let cool, then remove from the baking sheets.
To make the filling:
1. Cream the butter in a medium bowl.
2. Add the vanilla, cloves and cinnamon. Mix until well blended. 
3. Add in the sifted icing sugar and milk alternating until all is incorporated. 
To build the cookies:
1. Take a 1/2 tablespoon of filling and spread it on the bottom of one cookie.
2. Place another cookie, bottom side to the filling, onto the cookie you just put the filling on. Press firmly but not too hard.
3. Repeat until you have all the cookies done. 
Makes 4 1/2 dozen.