-
Spray an 8-inch square baking pan with cooking spray and line the bottom with parchment paper (or wax paper or aluminum foil). Set pan aside.
-
Combine the white chocolate chips and sweetened condensed milk in a large microwave-safe bowl. Heat in 30-second intervals, stirring well after each interval, until the baking chips are melted and the mixture is smooth. (Sometimes the chips don’t melt well, just keep stirring!)
-
Add peppermint or vanilla (if using) and the salt and stir to combine, then fold in the chopped Oreos. Scrape into the prepared baking dish and smooth into an even layer.
-
Refrigerate until set, about 2 hours. Once set, slice your fudge and serve.
-
Uneaten Oreo fudge can be stored in an airtight container, layered with wax paper, in the fridge for up to 1 week. It can also be stored in the freezer (again in an airtight container) for about two months.