01 - In a medium saucepan, mix oats, milk, salt, cinnamon, nutmeg, and raisins.
02 - Bring mixture to a gentle simmer over medium heat, stirring occasionally.
03 - Reduce heat to low and cook, stirring frequently, until oats are creamy and tender, about 10 to 12 minutes.
04 - Stir in maple syrup or honey and adjust sweetness to preference.
05 - While oats cook, place chocolate-hazelnut spread and 1 tablespoon milk in a microwave-safe bowl; microwave in 10-second intervals, stirring between, until just melted and pourable.
06 - Divide oatmeal evenly between two bowls; top each with toasted hazelnuts, then drizzle with the melted chocolate-hazelnut mixture.
07 - Serve immediately, offering extra maple syrup or honey if desired.