Step 1
Beat butter and sugar until smooth and creamy. Add egg yolks, beating one at a time, until completely incorporated. Add rum extract and mix until combined.
Step 2
Sift dry ingredients together and add to wet mixture. Combine well and refrigerate for at least 2 hours.
Step 3
Roll out chilled dough on a floured surface to 1/8- to 1/4 inch thickness. Cut into small circles with a cookie cutter.
Step 4
Place cookies on a lightly greased cookie sheet. Bake at 350 degrees for 8 minutes or until the edges are slightly golden. Remove from oven and cool completely.
Step 5
Spread dulce de leche filling in the middle of one cookie and top with another cookie. Drizzle with caramel sauce or dust with powdered sugar.
Step 6
This recipe is excerpted with permission from <a href="http://amzn.to/1jicfzn">"101 Gourmet Cookies for Everyone"</a> by Wendy Paul and published by Cedar Fort, Inc.
