Add the rolled oats and cacao powder to a small saucepan and mix well until evenly combined.
Slowly pour in the milk, stirring constantly to create a smooth mixture.
Place the saucepan over medium heat and stir in the honey. Bring the oats to a gentle simmer.
Reduce the heat to low and continue cooking, stirring frequently, for about 5 minutes or until the oatmeal is thick and creamy.
Remove from heat and serve warm with your favorite toppings.