Reserve 4 Oreos and place the rest in a large plastic bag and break into large chunks. Don't break them too small, but at least into thirds or quarters.
In a small saucepan, heat condensed milk and white chocolate chips over medium-low heat, constantly stirring until completely melted. Remove from heat.
Mix the cookies into the chocolate mixture and pour them into the prepared pan. Break the last 4 cookies into large pieces and sprinkle them on top. Press them in with a spoon if necessary.
Refrigerate at least an hour to set. Remove from pan with parchment. Using a warm, dry knife, cut squares, and serve!
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Notes
WHITE CHOCOLATE: If you are looking for a good white chocolate morsel, we recommend Guittard vanilla milk chips. There are no waxes in them, and they tend to melt better. CUTTING: It's best to cut the fudge while it's cold with a warm knife. You can cut your Oreo Fudge into 16 or 36 squares, depending on how big you want your pieces. STORING: Fudge can be stored at room temperature for about a week in an airtight container or frozen for up to 3 months. Definitely use a non-stick pan or pan lined with parchment when making this recipe.Nutritional information is approximate and was calculated using a recipe nutrition label generator and will vary based on cooking methods and brands of ingredients used.