Preheat your oven to 350 degrees.
In a medium sized bowl combine your cake mix, eggs and vegetable oil and stir together to make a thick cookie batter.
Scoop 1 1/2 - 2 TBS of dough and roll into a ball. Repeat with additional dough.
Place 12 cookies onto a cookie sheet lined with parchment paper or a silicone liner.
Bake cookies for about 8 minutes until the tops start to get crinkly.
Remove from oven and allow to cool for 2 minutes on baking sheet.
Transfer to cooling rack to cool completely.
Spread frosting over the top of a cookie.
Place one nilla wafer onto the bottom half of cookie.
Place two candy eyes above the nilla wafer.
Place two pretzels above the eyes like antlers.
Attach one m&m to each Nilla wafer using frosting.
Allow frosting to set and serve!