Step 1 - Add Everything to the Jar
Add the rolled oats, almond milk, chia seeds, vanilla extract, and blueberries to your mason jar or container. Add the maple syrup if using.
Adding everything simultaneously rather than layering is specifically correct for overnight oats the ingredients need to be in contact with each other and the milk for even hydration and flavor distribution throughout the soaking period.
Liquid quantity guidance:
⅔ cup almond milk - produces thicker, chunkier oats with more distinct oat texture
¾ cup almond milk - produces creamier, softer oats that flow more easily from the jar
Choose based on your preference. If you've never made overnight oats before, start with ¾ cup and adjust on subsequent batches.
Step 2 - Add the Almond Butter
Add the 1 tablespoon of almond butter to the jar. You don't need to stir it in completely at this stage the overnight soaking distributes it partially, and many people prefer the distinct pockets of almond butter rather than a completely uniform mixture.
If you want fully integrated almond butter: Warm it briefly in the microwave for 10 seconds to thin it slightly, then stir vigorously. This distributes it more evenly through the oat mixture.
Step 3 - Mix and Seal
Shake the sealed jar, or stir with a spoon until the oats, chia seeds, and milk are combined. The blueberries don't need to be evenly distributed they'll distribute partially during soaking and the rest during eating.
Seal the jar and refrigerate for at least 4 hours overnight (8-12 hours) produces the best result, with the oats fully softened, chia seeds fully gelled, and all flavors well melded.
Step 4 - Top and Eat
In the morning, open the jar and add additional fresh blueberries on top these provide fresh, slightly firm berry texture against the soaked, slightly softened blueberries inside. Add any additional toppings (see below) and eat directly from the jar.
No reheating necessary - overnight oats are designed to be eaten cold. If you genuinely prefer warm oatmeal in the morning, these can be microwaved in their jar (remove lid) for 60-90 seconds, but the texture changes significantly from the cold version.