01 - In a medium bowl or jar, combine rolled oats, milk, Greek yogurt, 2 tablespoons of Biscoff spread, maple syrup, vanilla extract, and a pinch of salt. Stir thoroughly until completely smooth and well incorporated.
02 - Cover the container and refrigerate overnight, or for at least 4 hours, until the oats have softened and achieved a creamy texture.
03 - In the morning, stir the oats thoroughly. If the mixture appears too thick, add an extra splash of milk to reach desired consistency.
04 - Top with crushed Biscoff cookies, fresh berries, banana slices, and drizzle with melted Biscoff spread if desired. Serve chilled.