Add the oats, milk, and pudding mix to a microwave-safe bowl, and stir until thoroughly combined. Microwave the bowl on HIGH for 2 minutes 15 seconds, stirring every 45 seconds, or until the oatmeal has thickened.
Immediately add the white chocolate, stirring until it has melted. Stir in the raspberries. Let the oatmeal cool for 2 minutes before eating.