Step 1: Combine Dry Ingredients
In a mason jar or bowl, add the rolled oats, cocoa powder, chia seeds (if using), and a pinch of salt. Give it a quick stir to distribute the cocoa powder evenly throughout the oats. This ensures you won’t have clumps of cocoa powder in your finished oats.

Step 2: Add Wet Ingredients
Pour in the milk, Greek yogurt, peanut butter, maple syrup (or honey), and vanilla extract. The peanut butter might sit on top at first—that’s completely normal.

Step 3: Mix Thoroughly
Using a spoon or small whisk, stir everything together vigorously for about 30 seconds. You want to break up the peanut butter completely and ensure the cocoa powder is fully incorporated with no dry pockets of oats remaining. The mixture should be thick but pourable, with a uniform chocolate color throughout.

Step 4: Divide and Store
If you mixed in a bowl, divide the mixture evenly between two mason jars or airtight containers. If you mixed directly in jars, you’re already set! Make sure to leave a little room at the top for toppings later.

Step 5: Refrigerate Overnight
Seal the containers with tight-fitting lids and refrigerate for at least 4 hours, but preferably overnight (8-12 hours). During this time, the oats will absorb the liquid and soften, the chia seeds will create a pudding-like texture, and all the flavors will meld together beautifully.

Step 6: Stir and Serve
When you’re ready to eat, remove the jar from the fridge and give it a good stir. The oats will have thickened considerably. If the mixture is too thick for your liking, add a splash of milk and stir until you reach your desired consistency.

Step 7: Add Toppings
This is where the fun begins! Top your oats with an extra drizzle of peanut butter, a sprinkle of chocolate chips, sliced bananas, chopped peanuts, or even a few Reese’s Pieces for that authentic candy experience. Get creative and make it your own!

Step 8: Enjoy
Eat your overnight oats cold straight from the fridge, or if you prefer them warm, microwave for 45-60 seconds, stirring halfway through. Both ways are absolutely delicious!