Preheat oven to 350 degrees. Cream butter and
sugar in a large bowl. Add lemon zest and blend
well. Stir in flour a little at a time by hand.
Dough will be crumbly, so dump it out onto a
counter top or pastry board and work it together
by hand until smooth. Make small balls of dough
and place in a greased mini muffin tin. Flatten
the dough so that it mimicks the shape of the tin.
Bake 20-25 minutes in a preheated 325 degree oven
until the bottom edges are just starting to brown.
Immediately press down to flatten the cup. Allow