Unwrap all of your Hershey hugs. I always do this first because it's the most tedious part of the recipe.
Line your baking sheet with parchment paper.And a layer of your pretzels to the baking sheet. Add the hugs on top of the pretzels, somewhat centered.
Preheat your oven to 200 degrees Fahrenheit.
After or even while it preheats, (this won't take long) add your baking sheet with your pretzels and hugs to the oven.
Keep an eye on them as they bake, it will take about 4-5 minutes for the chocolate to soften enough to press a M&M flat. Around 4 minutes I test this.
If the M&M goes flat against the chocolate after your test, remove from the oven.
Quickly (and carefully, the baking sheet will be hot) add a M&M to the top of each hug, pressing down so that they adhere together.
Place tray in the refrigerator for 5-10 minutes to allow to chill and harden. Store your Christmas pretzel M&M hugs (I call them reindeer noses too) in an airtight container before serving, for up to a few weeks, but they really won't last that long!