Begin by preheating your oven to 350°F (175°C). Prepare a muffin tin by greasing it with non-stick spray or lining it with muffin liners for easy removal.
In a large mixing bowl, combine the all-purpose flour, granulated sugar, packed brown sugar, baking powder, ground nutmeg, ground cinnamon, and salt. Whisk these dry ingredients together thoroughly until they are evenly mixed.
In a separate bowl, crack the large egg and whisk it together with the whole milk, melted unsalted butter, and vanilla extract until the mixture is well combined and smooth.
Carefully pour the wet ingredients into the bowl with the dry ingredients. Gently stir the mixture with a spatula or wooden spoon until just combined; be cautious not to over-mix, as this will help keep the muffins light and fluffy.
Using a spoon or a ladle, fill each muffin cup about ¾ full with the batter, ensuring even distribution. Place the muffin tin in the preheated oven and bake for 18-20 minutes, or until a toothpick inserted into the center of a muffin comes out clean.
While the muffins are baking, prepare the delightful maple glaze. In a small bowl, whisk together the maple syrup and powdered sugar until the mixture is smooth and free of lumps.
Once the muffins are baked, allow them to cool in the muffin tin for approximately 5 minutes. After cooling slightly, transfer them to a wire rack to cool completely.
While the muffins are still warm, dip the tops of each muffin into the maple glaze, letting any excess glaze drip off back into the bowl.
For an extra touch of flavor and sweetness, sprinkle a blend of cinnamon and sugar over the glazed tops of the muffins before the glaze sets.
Notes
Arrange the glazed muffins on a decorative platter for a beautiful display. Drizzle any leftover maple glaze over the muffins.