*omit if using microwave popcorn
To pop popcorn on the stove: Pour oil in a large pot and heat on medium-high for 2 minutes. Add in popcorn kernels and cover, gently shaking the pot occasionally. Once popcorn begins to pop, decrease heat slightly and shake the pot more consistently. Remove pot from heat once you can count to 3 between pops. Remove unpopped kernels and pour popcorn into 1 giant bowl or 2 large bowls. Salt popcorn lightly if desired.
Microwave chocolate bark on high for 1 minute 30 seconds. Stir gently, then microwave for an additional 30 seconds to 1 minute, until chocolate is fully melted and smooth.
Pour chocolate over popcorn and sprinkle peppermint pieces on top. Stir thoroughly to coat. Spread on wax paper to cool. Break pieces up gently and enjoy!