A happy holiday treat!
In a medium saucepan over medium heat, add your condensed milk, chocolate chips, and marshmallows, stirring to combine.
Add your peanut butter, vanilla, and then stir again until well combined.
Remove from heat, pour the mixture into a greased 9 x 9-inch pan and spread with a spatula to smooth the top.
Place in the fridge to chill until firm.
Slice into 1-inch pieces, and store in an airtight container.
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