Line up five clean mason jars or airtight plastic containers on your kitchen counter. Using uniform containers makes it easier to measure and store your meals in the refrigerator efficiently. Ensure each container is dry before you start adding your ingredients.

Divide the rolled oats evenly among the five jars. Add one teaspoon of chia seeds (if using), a small pinch of salt, and a dash of cinnamon to each container. The salt is crucial as it enhances the natural sweetness of the oats and prevents them from tasting bland.

Pour 1/2 cup of your chosen liquid into each jar. If you prefer a sweeter breakfast, add a small drizzle of honey or a sprinkle of brown sugar at this stage. Use a spoon to stir the mixture thoroughly, ensuring all the oats are submerged and there are no dry pockets at the bottom of the jar.

Place one tablespoon of peanut butter on top of the oat mixture in each jar. Slice your bananas and distribute them across the containers. Don’t worry about the fruit browning slightly; the cold temperature and the seal of the jar will keep them fresh and delicious for several days.

Screw the lids on tightly and place the jars in the refrigerator. Let them sit for at least 6 hours, though overnight is best. During this time, the oats absorb the liquid, softening into a creamy, pudding-like consistency that is ready to eat the moment you wake up.