Add the yogurt, peanut butter, cocoa powder, maple syrup and protein powder to a mixing bowl and whisk together.
Pour in the milk and whisk until combined. Stir in the oats, salt, and chia seeds.
Divide the mixture into 2 jars or other airtight containers and refrigerate for at least 3 hours or overnight for the best results. Top with peanut butter and chocolate chips if desired.
Video
Notes
The overnight oats will keep for 4-5 days in the refrigerator.