Preheat your oven to 425 degrees, and generously grease a 12-cup muffin tin, or line it with paper liners. In a large bowl, stir together the flour, baking powder, and salt. Using a pastry cutter or clean hands, cut in the cold butter until the mixture resembles sand and there are small bits of butter running throughout. Using a fork or spatula, stir in the milk and 1/3 cup maple syrup until well combined. Then, fold in your sliced scallions, sausage, and the shredded cheddar cheese. The batter will be very thick and dough-like.
Divide the batter evenly into your 12 muffin cups- they should be almost full to the top of the cups. Bake for 15-18 minutes, or until a toothpick comes out clean, and the tops are golden brown. While the muffins are still hot straight from the oven, brush the tops of the muffins with the remaining 2 tbs. of maple syrup. Optionally, sprinkle the tops with flakey salt Cool in the pan for 10 minutes before serving!