In a microwave-safe bowl, stir together the oats, salt, and milk. Cook in the microwave about 4 minutes, watching carefully, and stopping to stir occasionally so it doesn't bubble over (see notes for tips). Let sit while you prepare the bananas.
In a small skillet, melt the butter over medium heat. Stir in 2 teaspoons of maple syrup and bring to a bubble.
Add the sliced bananas to the pan in a single layer, and cook for about 2 minutes, until the bottoms are browned. Flip the bananas with a spatula, sprinkle the pecans over them, and continue to cook until bananas are softened, another minute or 2. Remove from heat.
Stir a little extra milk (2 tablespoons or so) and 1/2 teaspoon maple syrup (more or less, to taste) into the cooked oatmeal. Top oatmeal with bananas and pecans and sprinkle lightly with cinnamon. Serve warm.
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Notes
To make more than one portion of this recipe at a time, it's best to cook the oats on the stove top instead of in the microwave. Simply add the oats, salt, and milk to a saucepan and cook on medium heat until soft, about 5 minutes.
To use quick oats instead of old-fashioned, use the same proportions, but cook in the microwave for 2 minutes only, until the oats are soft. You will not need to watch them as closely as they don't cook for long enough to bubble over (typically).