Melt 4 tablespoons of the butter in a small saucepan over medium heat. Turn off the heat and whisk in the maple syrup and hot sauce. Season with salt. Cover to keep warm.
Gently stir the macaroni and cheese into the pancake batter. Heat a large nonstick skillet over medium heat. Add 1 tablespoon of the butter and swirl to coat.
Scoop 3 pancakes into the pan, about 1/3 cup each. Use the back of a spoon to lightly spread out the batter, making sure that there is enough space around each pancake so they do not touch. Sprinkle 2 tablespoons of Cheddar on top of each pancake, using the back of a spoon to lightly press into the batter. Cook until there are a few bubbles around the edges of the pancakes and the undersides are lightly browned, about 3 minutes. Flip the pancakes and cook until the cheese is completely melted and lightly browned, about 2 minutes more.
Carefully wipe out the skillet and repeat the process with the remaining pancake batter and Cheddar, adding 1 tablespoon butter to the skillet for each new batch.
Serve the pancakes in stacks of 3 topped with the remaining butter and hot sauce-maple syrup mixture.
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