Wash the mango, peel it, and cut it into smaller pieces.

Place milk, oats, and sweetener in a saucepan. Bring to a boil, stirring occasionally. Then reduce the heat and cook for about 5-10 minutes, depending on the consistency of oatmeal you want to achieve. Stir from time to time. If necessary, add a bit of water.

Transfer to a plate and add mango.