In a large mixing bowl or jar, add 1 cup of rolled oats, 1 cup of milk, and ½ cup of yogurt. Stir in 2 tablespoons of maple syrup, 1 teaspoon of ground cinnamon, and 1 teaspoon of vanilla extract. Ensure all ingredients are well mixed.

Using a spoon, mix the ingredients until they are completely combined and the oats are evenly coated. The consistency should be creamy yet thick.

Cover the bowl or jar with a lid or plastic wrap and refrigerate for at least 4 hours or preferably overnight.

Before serving, stir to redistribute ingredients and top with fresh berries, banana slices, chocolate chips, or nuts.

Spoon into bowls or jars and enjoy cold or let sit at room temperature for a few minutes if preferred warm.