Measure and add the rolled oats, milk, vanilla extract, and honey or maple syrup into a mixing bowl or large jar.
1 cup rolled oats
Whisk the mixture thoroughly until well combined and the oats are evenly coated with the liquid. The mixture should be smooth with no dry patches.
Cover the jar or bowl with a lid or plastic wrap and place it in the refrigerator overnight, or for at least 5 hours, to allow the oats to soak and soften.
In the morning, remove the jar from the fridge and check for a creamy, thickened consistency. The oats should appear swollen and tender, with a smooth, pudding-like surface.
Spoon the overnight oats into serving bowls, and optionally top with fresh fruits, nuts, or a drizzle of additional honey for added flavor and texture.
1 cup rolled oats
Serve immediately and enjoy a creamy, wholesome breakfast with a tender texture and fragrant vanilla aroma.