Start with the dry base: In a jar or bowl, add oats, chia seeds, and protein powder. Stir to evenly distribute the powder so it doesn’t clump later.
Mix the liquids: In a measuring cup, whisk milk, yogurt, maple syrup, peppermint extract, vanilla, and salt.
Taste and adjust the sweetness and mint level before pouring.
Combine and stir well: Pour the liquid over the dry mixture. Stir for 20–30 seconds, scraping the bottom and sides to incorporate the protein powder fully.
Add the chocolate: Fold in mini chocolate chips. If using fresh mint or optional color, stir it in now.
Seal and chill: Cover and refrigerate for at least 4 hours, ideally overnight, until thick and creamy.
Finish and serve: In the morning, give the oats a good stir.
If they’re too thick, add a splash of milk. Top with extra chocolate chips, a few mint leaves, or a spoonful of yogurt if you like.