Add the Sweetened Condensed Milk, butter, white chocolate, and a pinch of salt to a medium nonstick saucepan over medium-low heat.
Stir constantly with a spatula until the chocolate melts and the mixture thickens, about 8 to 10 minutes. It's ready when you drag the spatula through and the mixture takes 2 to 3 seconds to come back together.
Remove from the heat and stir in 1 cup of the crushed Oreos.
Pour onto a rimmed plate or shallow dish and let it cool to room temperature, then chill for 1 to 2 hours until firm enough to roll.
Grease your hands with a little butter or cooking spray and roll the mixture into 1-inch balls.
Roll each ball in the remaining crushed Oreos.