Lay out your parchment paper and get your sprinkles and pretzels open.
Melt the chocolate in the microwave for 1 to 2 minutes in a microwave-safe container until all the pieces are melted. Stir it every 30 seconds to make sure it doesn’t burn.
Pour the melted dark chocolate into a piping bag or plastic bag.
Place the pretzels on the parchment paper with several inches between them.
Snip the end off of the piping bag or plastic bag. Pipe the chocolate onto the pretzels in a tree shape.
Add the sprinkles to the trees with a spoon or your fingers.
Let the trees sit on the parchment paper and harden for 2 hours at room temperature. If you’re in a hurry, place them in the refrigerator to harden in 30 minutes.
Carefully peel the trees off the parchment paper before serving.