I take no claim for the original idea and recipe, so I'll just link to it.
I was into the look of the cookies, though, so here it is.
1. 2 bags of life savers
2. Green granulated sugars
3. Food mist - Green
4. White cookie frosting.
1. Crush a bunch of life savers in separate bags. Its important to keep the colors in separate bowls. A word to the wise - don't do this in advance. I crushed my candy the day before and it got stuck back together in a weird way. It was a serious pain to split apart. I ended up using two full bags of life savers for the 100 cookie production, so estimate appropriately.
2. Ln a cookie sheet with parchment paper.
3. Make your sugar cookies and roll out the dough about 1/4 inch thick. Cut out the christmas tree and place it on the cookie sheet. Too thick and the stain glass effect won't work as well.
4. Once you have your cookie sheet filled, *then* cut out the circles for stain glass. I used a shot glass to accomplish the task.
5. Fill the wholes the crushed candy. Fill, but do not overfill the whole! If you do, it'll spill over the cookie and look not very nice.
6. Pour some green sugar over the cookie. It may seem like a lot, but it looks much better this way. If at all possible, try to keep the green sugar from falling in the whole or over the hard candy. It'll blur the stain glass part.
7. Bake as decorate. Let cool quite a bit.
8. Use the food mist to spray the trees green. Let dry.
9. Use the Cookie frostng to make the garland. The bottle says let sit 45 minutes, but trust me, it's more like an hour at least.
Wait for the praise :)