Cut prepared brownie into 16 servings then roll to create balls.
Melt 8 oz of the chocolate and then dip each brownie ball into the melted chocolate and place on parchment to set.
Before the chocolate hardens, add two candy eyes to each brownie ball. Set aside.
To make the marshmallow web, work in batches by adding 4- 6 marshmallows to a small bowl. Heat in the microwave for 20 - 30 seconds and then stir. Allow to cool slightly then scoop some of the marshmallow cream into your hands and stretch into web-like strings onto the plates.
Melt the remaining chocolate and pour into a zip top or piping bag. Snip the tip of the bag and draw 8 legs onto the prepared plate.
To prepare the ice cream "body", scoop Breyers® Chocolate Ice Cream into balls and roll in chocolate sprinkles. Place on parchment paper and freeze until ready to use.
Assemble the spiders by adding a brownie ball head on the prepared plate over the chocolate legs and one prepared ice cream ball for the body. Serve and enjoy.