Place the Oreo cookies in a food processor or blender and pulse until they become fine, even crumbs. Transfer the crumbs to a large mixing bowl, reserving 1 to 2 tablespoons to use later as a topping if desired.
Add the softened cream cheese to the bowl with the Oreo crumbs. Using a handheld mixer, blend the mixture until it’s fully combined and smooth, scraping down the sides of the bowl as needed to ensure even mixing.
Scoop out the mixture using a tablespoon, then roll it between your hands to form smooth balls. Place each ball onto the prepared baking sheet. Once all the balls are formed, transfer the baking sheet to the freezer and chill for at least 20 minutes until the balls are firm.
Meanwhile, chop the chocolate and place it in a microwave-safe bowl. Melt the chocolate in the microwave in 20 to 30 second intervals, stirring well after each round, until fully melted and smooth.
Once the Oreo balls are firm, dip each one into the melted chocolate, making sure it’s fully coated. Carefully place each coated ball back onto the baking sheet. While the chocolate is still wet, sprinkle the reserved Oreo crumbs on top for garnish, if using.
After all the Oreo balls have been coated and decorated, place the baking sheet in the refrigerator for at least 20 minutes, or until the chocolate has completely set.
Serve chilled or at room temperature, and enjoy your delicious no-bake Oreo cookie bites!