In a medium mixing bowl, combine rolled oats, your choice of milk, and Greek yogurt. Stir gently until fully mixed, ensuring no dry oats remain.

Allow it to rest for about 5 minutes.

Crush the Oreo cookies into smaller chunks and add them, along with cocoa powder and vanilla extract, to the oat mixture. Stir until all ingredients are well combined.

Transfer the mixture into jars or airtight containers evenly, tap gently on the counter.

Seal them tightly and chill in the refrigerator for at least 4 hours, or preferably overnight.

When ready to serve, stir and top with whipped cream, chocolate chips, and crushed Oreos.

Enjoy your Decadent Oreo Overnight Oats!