Instructions

• Line an 8 x 8-inch pan with non-stick foil, leaving an overhang on two opposite sides for easy removal; press the foil smoothly into the pan and set aside.
• Divide the 14 ounces of sweetened condensed milk equally between two microwave-safe bowls and set the bowls aside.
• Chop the 10 Oreos into quarters and set aside.
• In one of the condensed-milk bowls, add the 1 cup white chocolate chips and the 2 tablespoons butter.
• Microwave that bowl for 30 seconds, stir, then continue microwaving in 15–20 second intervals, stirring between each interval, until the white chocolate and butter are fully melted and the mixture is smooth.
• Stir the chopped Oreos into the white chocolate mixture until evenly combined.
• Pour the white chocolate–Oreo mixture into the prepared pan and spread it into an even layer with a spatula. (If desired, chill 10–15 minutes to firm slightly before adding the top layer.)
• In the other condensed-milk bowl, add the 1 cup semi-sweet chocolate chips. Microwave for 30 seconds, stir, then continue microwaving in 15–20 second intervals, stirring between each interval, until the semi-sweet chocolate is fully melted and smooth.
• Pour the melted semi-sweet chocolate mixture over the white Oreo layer and spread evenly to cover.
• Refrigerate until completely set (about 1–2 hours). Use the foil overhang to lift the fudge from the pan, peel off the foil, and cut into squares.