In a large mixing bowl, beat butter and brown sugar until light and fluffy.

Beat in egg, maple syrup, and maple extract.

In a medium bowl, whisk together flour, walnuts, baking powder, and salt.

Add the flour mixture to the mixing bowl, and beat until just combined.

Using a cookie press fitted with your choice of disk, press cookie dough 1-inch apart onto ungreased cookie sheets.

Sprinkle with sanding sugar or sprinkles.

Bake at 350 degrees for 8-10 minutes, or until bottoms are very pale brown.

Remove to wire racks to cool completely.