Melt each of the candy melt colors using your desired method (see next step).
MELTING INSTRUCTIONS:Microwave: use a microwave safe bowl and heat candy melts in 20 second increments, stirring between heat cycles.Stovetop: melt candies over low heat, stirring constantly, remove from heat as soon as candies are melted; double boiler can be used if desired.Slow Cooker: add candy melts to oven safe dishes or a crock pot divider and place in slow cooker (mason jars work well for this); cover, set to low for 1 - 2 hours, stir before using. You can melt multiple colors at once using this method.
On a tray or baking sheet lined with parchment paper or a silpat mat, place dollops of the colors all over the lined sheet pan and swirl them together.
Separate the sandwich cookies and place 2 cream side up next to each other to create eyes. Do the same with the smaller cookies and add M&Ms to make the pupils. Sprinkle the Halloween sprinkles over the bark.
Allow the bark to set completely, then break into pieces. NOTE: if using the refrigerator to set your bark, do not leave it in longer than about 15 minutes or it may sweat when taken out.
Notes
Calories are automatically generated. For best results calculate based on your exact ingredients.