In a food processor, pulse to crush Oreos to desired texture. Alternatively, place in a double sealable bag, seal and use a rolling pin to crush.
1½ cups crushed Oreos
In a large mixing bowl or stand mixer fitted with the whisk attachment, whip cold cream, gradually increasing speed until stiff peaks form. On low speed, blend in sweetened condensed milk until just combined.
2 cups heavy cream, 14 ounces sweetened condensed milk
Fold in crushed Oreos. Pour into a loaf pan or sealable container. Cover and freeze until solid.