Cut the tops off of the strawberries. The ends should be flat. Insert a toothpick or skewer into the flat end of each strawberry and chill in the refrigerator for about an hour. By chilling the strawberries the chocolate will dry quickly, so you need to have the sprinkle decorations ready.
Melt the chocolate or candy melts in the microwave, stirring occasionally. You can also melt these double boiler style, in a bowl over a saucepan of simmering water.
Whisk together the powdered sugar and 2 tablespoons of the milk. Add more milk to reach a thick spreading consistency. If it's still too thick you can add small amounts of water or more milk until you are happy with it.
Spread a small amount of powdered sugar icing on the top of ONE Oreo cookie.
Using the toothpick as a handle, dip ONE strawberry into the melted chocolate. Gently shake off any excess chocolate.
Sprinkle with nonpareils and candy sprinkles.
The chocolate should dry quickly. when it does, remove the strawberry from the toothpick and place the flat end onto the top of the Oreo cookie. The powdered sugar icing will act as a glue.
Add a star sprinkle to the top.
Repeat this process for each strawberry!
When melting chocolate it's best to stop the melting process when there are still small pieces visible. Remove from heat or microwave and stir until remaining pieces melt.
Using a toothpick or a wooden skewer to dip the strawberries keeps your fingers mess free!
If you would like it to look like the "tree" is surrounded by snow, spread the powdered sugar icing to the edges of the Oreo cookie and then put the strawberry tree in place.