Love Letter Butter Cookies

0 Preheat oven to 325° Mix butter, flour and powdered sugar. Dust counter with flour and roll out dough. Cut into squares the size of your choice. I like to make mine small and dainty. Bake for 14-16 minutes, allow cookies to set and cool on tray.Blend together powdered sugar, milk and extract. The glaze should be thick but still run smooth while mixed. If it is too runny, it will not hold its shape on the cookies and will drip thin down the sides. Test a cookie first to check!Fill a piping bag with frosting and clip a very small end off of the bag. Pipe and outline on the cookies and fill the centers. Use a toothpick to smooth frosting by moving it in small circles. Allow to set. Add another layer of frosting outline on top in the shape of an envelope. Color a small amount of the frosting red or pink and make small hearts to "seal" the envelope. Allow to set before packaging.