In a small pot, add the oats, whole milk, diced apple, shredded coconut, ground flax, cinnamon, and a pinch of salt and stir to combine.

Bring to a gentle simmer over medium-low heat and cook, stirring occasionally, until the oats are soft and creamy, about 5–7 minutes.

Remove the pot from the heat and quickly whisk in the vanilla protein powder until fully dissolved and smooth.

Add water a little at a time, stirring, until you reach your desired oatmeal thickness.

Spoon the oatmeal into a bowl and top with a dollop of Greek yogurt, extra apple, shredded coconut, and more cinnamon before serving.