In a small saucepan, combine 1 cup water, milk, and salt. Bring to a boil, then turn down the heat to a simmer.
In a separate bowl, whisk together the protein powder with the remaining 2 tablespoons of water until it's smooth.
Stir in the rolled oats, chia seeds, and brown sugar into the simmering liquid. Cook for about 5 minutes, stirring now and then, until the oats are tender and the liquid is mostly absorbed.
Take the saucepan off the heat. Mix in the protein blend and banana slices, cover, and let it sit for 2-3 minutes. Serve the oatmeal in bowls, maybe with a sprinkle of cinnamon on top for extra flavor.
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