Heat oven to 375° F. rack in center of oven.
Grease a heavy cookie sheet.
Cream Butter sugar and 2 teaspoons of cardamom until fluffy.
Add flour and beat at low speed. Stir in 1/2 cup almonds.
Combine powdered sugar and remaining cardamom.
Roll dough into 1 Tablespoon balls and roll each in the powdered sugar mixture, coat well.
Place on cookie sheet. With the bottom of a small glass, dipped in the sugar, press the cookie to 1/2" thickness.
Press a couple of almond slices into each cookie (use more if you like).
Have cookies at least a 1/2" apart and bake about 14 minutes or until they are light brown.
Cool on a rack.
Put in an airtight container.
You can freeze and they will keep at least a couple of months.