Preheat oven to 375 degrees Fahrenheit and grease a 24-cup mini muffin tin with non-stick spray.
In a large mixing bowl, whisk together the high-protein pancake mix, egg, and water or milk until just combined.
Stir in the cooked breakfast sausage crumbles and maple syrup.
Distribute the batter evenly into the prepared mini muffin tin, filling each cup about three-quarters full.
Bake for 12 to 15 minutes or until the muffins are golden brown and a toothpick inserted in the center comes out clean.
Allow to cool in the pan for 5 minutes before transferring to a wire rack.