Pour 1 pint (2 cups) of heavy cream into a high powered blender. Place lid on blender. Select Milkshake/Ice Cream button. Check cream by sticking a rubber spatula in the blender. If cream is not thick and sticks to spatula without spilling off, it needs to be blended for longer. Pulse for 10-20 seconds, or until you can scoop out cream without it spilling off the spatula. It will be like firm peaks.
Pour one 14 oz can of sweetened condensed milk, 1 teaspoon vanilla extract, and ½ teaspoon salt into loaf pan. Mix together with a whisk. Once combined, add whipped cream to milk mixture, about 1 cup at a time. Whisk together until smooth.
Freeze for 2 hours. While ice cream base is freezing, crush 8 Oreo cookies by pulsing them in the blender (or food processor) for 5-10 seconds. OR place them in a plastic bag and roll a rolling pin over them to crush them to your desired cookie size.
After 2 hours, remove ice cream from freezer, add cookies and 1 c frozen blueberries to ice cream. Using the rubber spatula, mix together until mostly combined. Return to freezer and freeze for at least 3 more hours.