Preheat oven to 375 degrees F. Generously coat two 12-count mini muffin pans with cooking spray.
Melt 1/4 cup butter in a small saucepan over low heat. Remove from heat and set aside.
Measure the flour by lightly spooning into the measuring cup and then leveling off with the back of a knife. In a large bowl, combine the flour blend, 1/2 cup sugar, baking powder, nutmeg and salt. Add the egg, milk and the 1/4 cup melted butter and stir until smooth.
Fill each muffin cup about half full.
Bake for 15 to 20 minutes, or until lightly browned.
While muffins are baking, melt the remaining 1/4 cup butter in the same saucepan over low heat. Remove from heat and set aside. Combine the remaining 1/2 cup sugar and cinnamon in a small bowl.
While muffins are still hot, gently remove from pans using a knife to assist. Briefly dip each muffin into the butter and then immediately roll in the cinnamon sugar mixture. Place on a plate to cool. Serve.