Place approximately 1 teaspoon of peanuts into the bottom of each cup.
Place a scoop of ice cream on top and press it down firmly into each cup.
Then top the ice cream with approximately 1 tablespoon of hot fudge sauce, spreading it into an evenly layer.
Continue with this ingredients again in the cups: peanuts, ice cream and hot fudge. Make sure to press down into the cup once each layer is added.
Then top each cup with more peanuts and carefully place a popsicle stick into the center of each cup.
Place the cups on a baking sheet lined with parchment paper and freeze for 2-3 hours until the ice cream cups are harden.
Place the chocolate chips and vegetable oil in a microwave safe dish that is tall enough to dip the ice cream cups into.
Microwave in 30 second intervals, stirring after each interval, until the chocolate chips are fully melted.
Remove the ice cream cups from the freezer and lightly squeeze the outside of the cups to remove the ice cream from the cups. You can also dip the cups into cool water or run a butter knife around the outside edge of the cups to release the ice cream if needed.
Then dip the frozen ice cream into the melted butter making sure that the outside if fully coated and gently twirl the ice cream to remove any excess chocolate that may drip off.
Place back on the baking sheet lined with parchment paper. Continue this process until all the ice cream pops are coated with the chocolate.
Place the baking sheet back into the freezer until the chocolate is set (approximately 30-60 minutes).
Then the homemade buster bars are ready to serve and enjoy!