These are probably the world's simplest cookies, great when you have kids that need a quick snack. The recipe comes from Parhaat Leivonnaiset. If you don't care for cardamom, vanilla could very easily be substituted.
The ingredients are:
175 g softened butter (12 Tablespoons)
2 1/2 dl sugar (1 cup)
2 teaspoons cardamon
1 teaspoon baking powder
6 dl all-purpose flour (2 1/2 cups)
Preheat oven to 200 degrees Celsius (400 degrees Fahrenheit).
Beat the butter, sugar and 1 1/2 of the eggs (save a little beaten egg to brush on the top before baking). Combine the dry ingredients in a separate bowl. Then add the dry ingredients and mix well. The dough was rather dry when I made it.
Make the dough into 6 finger-width ropes. Place these on a greased cookie sheet, or use parchment like I did instead of greasing. Flatten the ropes with your fingers.
Brush with the reserved egg, and sprinkle pearl sugar on top. These are also fun if you use sprinkles or colored sugar for holidays. Before Christmas, I made them with chocolate dough and sprinkled with broken peppermint candies, you can find that post here.
Bake for about 10 minutes, mine would have been better if I hadn't let them bake quite so long! As soon as you take them out, cut them at an angle to separate the cookies.