Mix the Wet Base: In a medium bowl or directly in your mason jar, combine the almond milk, Greek yogurt, peanut butter, and maple syrup.
Whisk or stir vigorously until the peanut butter is fully dissolved into the liquid and the mixture looks smooth and uniform.This step is important — peanut butter needs active mixing to fully incorporate rather than sitting in a thick blob.
Add Oats and Chia Seeds: Add the rolled oats and chia seeds to the mixture. Stir well until everything is combined
Refrigerate: Cover andrefrigerate for a minimum of 4 hours — but overnight (8–10 hours) is ideal. Note: If you want, you can divide the mixture evenly between 2 jars or airtight containers.
Stir, Top, and Serve: In the morning, you'll notice that the oats will have absorbed all the liquid and expanded significantly. If the mixture looks thicker than you'd like, stir in a splash of almond milk (1–2 tablespoons) to loosen it.Add your toppings of choice (see suggestions below) and eat. No heating required.
Notes
Don't forget the stir. After refrigerating, the chia seeds can settle and the peanut butter can firm up slightly near the bottom. A good stir before eating and before adding toppings makes a real difference in the final texture.
Mix in the morning if you prefer chunky peanut butter texture. If you want distinct peanut butter swirls rather than a fully integrated flavor, layer the peanut butter on top of the mixed oats before refrigerating, and stir it through only partway in the morning.
Adjust consistency with milk in the morning. Overnight oats thicken significantly as the oats and chia seeds absorb all the liquid. If your jar looks too thick to enjoy easily, add a splash of almond milk and stir.