QUICK TIP: Chop oats with a knife to break down. Don't use a food processor, as it will turn the oats into flour and you will loose texture.

1. Preheat oven to 350F. Beat butter and sugar with electric mixer.
2. Add in the egg and mix thoroughly.
3. Add flour, vanilla, cinnamon, baking powder and oats to mixture. Mix well. Wrap dough in plastic wrap and chill in refrigerator for 15 minutes.
   QUICK TIP: Place stainless steel rolling pin in the refrigerator with dough. It will make it much easier to roll out.
4. Roll out dough on floured silicone baking mat with floured rolling pin.
5. Cut cookies with floured cookie cutter.
6. Place on cookie sheet and bake at 350 degrees for 7-9 minutes until just golden.
7. Let cool 5 minutes, then transfer to cooling rack to cool completely.
8. Oatmeal cookies can be any shape. This star cutter adds a holiday touch.
9. Oatmeal cookies can be any shape. This star cutter adds a holiday touch.
10. Icing the Cookies: Once cookies have cooled completely, prepare the glaze.
11. Mix all glaze ingredients together. Pour glaze into a pastry bag. (Read here for tips on filling a pastry bag.)
12. Outline cookie with a #4 tip and fill in so cookies are smooth.
13. Let dry completely before storing.