Preheat the oven to 350 degrees F. Grease 30 mini muffin cups.
Combine baking mix, applesauce, ¼ cup sugar, milk, egg, oil, and 1 teaspoon cinnamon in a bowl until just blended.
Spoon batter into the prepared muffin cups, filling each ¾ full.
Bake in the preheated oven until golden, 12 to 15 minutes.
Meanwhile, place melted butter in a shallow bowl. Combine remaining ½ cup sugar and remaining ¼ teaspoon cinnamon in a separate shallow bowl.
Dip warm puffs in melted butter, then roll in cinnamon-sugar mixture.
