Rolled oats, cocoa powder, milk, honey, and chocolate chips.
Combine oats, milk, and cocoa powder in a mixing bowl.
Add honey or your preferred sweetener to suit your taste.
Create layers with the oats mixture and chocolate chips in a jar.
Cover and refrigerate the jar for at least 6-8 hours.
Garnish with fruits, nuts, or whipped cream before serving.
Scoop out the overnight oats chocolate cake and savor the flavor.