Creating Banana Foster Overnight Oats is simple. Follow these steps:

1. Combine Oats and Milk: In a mixing bowl, combine the rolled oats and milk. Stir well to ensure all oats are soaked.
2. Add Flavorings: Mix in the brown sugar, maple syrup, vanilla extract, cinnamon, and nutmeg (if using). Stir until combined.
3. Layer Banana Slices: Gently fold in the sliced banana, ensuring they are evenly distributed throughout the mixture.
4. Optional Ingredients: If desired, add Greek yogurt for creaminess or chopped walnuts/pecans for added crunch.
5. Prepare for Chilling: Transfer the mixture into a jar or airtight container. Seal tightly.
6. Chill Overnight: Place the container in the refrigerator and let it chill for at least 4-6 hours, or overnight for best results.
7. Serve: In the morning, give the oats a good stir and enjoy them cold. If desired, top with additional banana slices, a drizzle of maple syrup, or a sprinkle of nuts.

Following these steps will ensure a smooth process, resulting in a delightful breakfast treat.