Dulce de Leche cinnamon sugar cookies

Dulce de Leche
0 Remove all labels from sweetened condensed milk.  
2 Place cans of sweetened condensed milk in a slow cooker.
3 Fill slow cooker with hot water, fully submerging the sweetened condensed milk with around 1" of water over the top of the can.
4 Place lid on slow cooker.  Cook for ten hours on high.
5 Turn off slow cooker.  Remove cans from slow cooker using extreme caution as they will be very hot.  Tongs are recommended. Do not open cans.
6 Place cans in a safe place where no one will touch or open them to cool.  Cool overnight or until no heat remains in can.
Cinnamon sugar cookies
11 Preheat oven according to sugar cookie dough instructions.
8 In a small bowl, combine 1 tablespoon cinnamon with 1 tablespoon of white sugar. Blend and set aside.
9 Roll sugar cookies into balls.  Sugar cookie balls should be around the size of a golf ball.
10 Roll the sugar cookies in the cinnamon sugar blend.
12 Place sugar cookie dough on parchment lined baking sheet. Bake according to package instructions.
13 Cool cookies completely.
White confectionery coating
15 In a glass bowl, microwave confectionery coating in 30 second increments stirring after each one ,until fluid.  
16 Stir in 1/2 teaspoon of cinnamon into the white coating.
17 Using a spoon, layer around 1 tablespoon of white confectionery coating on top of cooled cookie, leaving an outer rim of sugar cookie visible.
18 Allow white coating to harden.
Assembling cookies
20 Open the cooled dulce de leche.
21 Place 1M piping tip in piping bag.
22 Fill piping bag with dulce de leche.
23 Pipe dulce de leche in a circular motion on top of white confectionery coating, leaving some of the white confectionery coating exposed.
Storage
25 Store in an airtight container for 2-3 days.