Peel and chop the mango, then blend until completely smooth.
Add the mango puree to a mixing bowl.
Pour in the milk, maple syrup, vanilla extract, and chia seeds.
Stir in the rolled oats until everything is evenly combined.
Divide the mixture into two jars or bowls, then cover tightly.
Refrigerate for at least 6 hours or overnight.
Before serving, stir the Mango Overnight Oats well. If needed, add a splash of milk to loosen the texture.
Top with yogurt, fresh mango, and toasted coconut flakes before enjoying.