In a large mixing bowl, add rolled oats, almond milk, vanilla extract, ground cinnamon, and maple syrup if desired. Mix until well incorporated.

Chop ripe peaches into bite-sized pieces and gently fold them along with Greek yogurt into the oat mixture.

Divide the mixture into four jars or containers, leaving space at the top for any toppings.

Seal each jar and refrigerate overnight or for at least four hours to soak.

Stir the oats before serving. Warm in the microwave if desired, and add toppings before enjoying.