Gather all your ingredients and a clean 8-ounce or 12-ounce glass jar with a lid. Measure out the dry ingredients first to ensure accuracy. Using a glass container allows you to see the layers and ensures the oats stay fresh and cold in the refrigerator.

Since this is a no-cook recipe, the “cooking” happens through hydration. Combine the oats, milk, peanut butter, chia seeds, vanilla extract, sweetener, and salt in your jar. Stir vigorously with a spoon or whisk until the peanut butter incorporates into the milk and no dry clumps of oats remain. Seal the lid tightly and place the jar in the refrigerator for at least 4 hours, though overnight is best for the creamiest texture.

Remove the jar from the fridge and give the mixture one quick stir. If the oats are too thick, splash in a little extra milk to reach your desired consistency. Pour the oats into a beautiful serving bowl. Top with fresh banana slices, a few fresh berries, and a small drizzle of extra peanut butter. Add the crushed peanuts on top for a satisfying crunch before serving.