Mash the banana directly in your serving jar or bowl until completely smooth—this ensures even sweetness throughout your oats and prevents lumpy bites. While mashing, measure out all your dry ingredients (oats, flax, cinnamon, salt, and nutmeg) into a small bowl for easy mixing. I always mash the banana really well because even small chunks can make some spoonfuls less sweet than others, which throws off the whole breakfast experience.

Add the milk and vanilla to your mashed banana and stir until the banana is fully incorporated and the mixture is creamy. Pour in the measured dry ingredient mixture from Step 1, then add the maple syrup and chopped pecans. Stir everything together thoroughly for about 1 minute, making sure the oats are evenly distributed and fully coated with the liquid—this prevents dry pockets and ensures consistent texture throughout.

Cover your jar or bowl and refrigerate for at least 4 to 8 hours (or overnight). During this time, the oats absorb the liquid and soften while the flavors meld together beautifully. I find that letting it sit for the full 8 hours gives you the creamiest, most cohesive breakfast—the oats fully bloom and the banana flavor deepens slightly, making it taste more like actual banana bread.

Remove from the refrigerator and give the oats a quick stir. If the mixture is thicker than you prefer, add a splash of milk to reach your desired consistency. Serve directly from the jar or transfer to a bowl, and top with additional fresh fruit or nuts if desired.