First make the vanilla pudding by whisking together the cold milk and package of pudding until thickened.
Next add in about 1-2 tablespoons of rainbow sprinkles. Whisk until combined.
Scoop the pudding mixture into a piping bag or Zip-lock bag and cut the end off. Or you can just use a spoon to carefully spoon into the popsicle molds until half way.
Pop the hot fudge sundae into the microwave for a few seconds until you can pour it. Not hot just pourable.
Next drizzle some melted hot fudge on top. Continue to fill the popsicles with the pudding. Finish them off by adding a few more sprinkles then the crushed peanuts.
Insert the popsicle sticks and place in the freezer for about 4-6 hours. When ready to serve, pull out and leave on the counter for 5 minutes before removing from the molds.