Start by popping your popcorn. If you're using an air popper, great! If not, you can pop it on the stove or in the microwave. Just make sure to remove any unpopped kernels after popping to avoid any unpleasant surprises.
Line a baking sheet with parchment paper. This will help prevent the popcorn from sticking and make cleanup a breeze.
In a large mixing bowl, combine the popped popcorn, nuts, Reese’s Pieces, chopped Hershey’s bars, and Muddy Buddies. Toss everything together until evenly distributed.
In a microwave-safe bowl, add the white candy melts and peanut butter. Heat in the microwave in 30-second intervals, stirring in between until smooth and fully melted.
Pour the melted peanut butter and candy mixture over the popcorn mixture. Using a spatula, gently toss the popcorn until it's evenly coated. Make sure to work quickly so that the mixture doesn’t harden before you’re done!
Spread the coated popcorn mixture onto the prepared baking sheet. Use the spatula to flatten it out into an even layer. Let it cool for about 30 minutes, or until the chocolate sets.
Once cooled, break the popcorn into clusters and serve! You can store any leftovers in an airtight container for later enjoyment.