Place the Oreos on a large, parchment-lined baking sheet.
24 Peanut Butter Oreo Cookies
Pour the dark chocolate chips into a microwave-safe bowl and heat for 45 seconds.
1 cup Dark Chocolate Chips
Stir the chocolate well and then reheat for 10-15 seconds, as necessary, stirring after each heating until the chocolate is all melted.
Dip the ends of four pretzel stick halves in the chocolate and then press gently into the side of one oreo.
96 Pretzel Sticks
Repeat with four more halves for the other side of the Oreo, creating the spider body with 8 legs.
Use a toothpick to spread melted chocolate onto the cut side of two matching Reese’s pieces halves and place them, cut side down, onto the top of the Oreos to create the spider eyes. Repeat until each of the spiders has 2 eyes.
24 Reese's Pieces Candies
At this point the legs should have had time to set firmly into the Oreos. If they are not yet set, you can place them in the refrigerator for 10-15 minutes until set.
Check that the chocolate is still melted and reheat in 10-15 second increments until melted, if necessary.
Coat the bottom of the pretzels on each side of each spider’s legs into the melted chocolate, creating the “feet” of the spider and then replace them on the baking sheet.
Allow the spiders to cool until set, about 30 minutes at room temperature or 15 minutes in the refrigerator.