These soft pumpkin donut muffins bake up tender with real pumpkin and warm spices, then get a buttery cinnamon-sugar coating. All the donut flavor, no frying.
Prep. Set the oven to 350°F. Grease a standard 12-cup muffin pan thoroughly, including the edges around each cup. Leave out paper liners so the muffins can be coated after baking.
Mix. Beat the softened butter and sugar in a large bowl for 2–3 minutes, until lighter in color and fluffy.
Beat in the egg, then mix in the pumpkin puree and vanilla. Scrape the bowl to incorporate any butter mixture clinging to the sides.
With the mixer on low, add the flour mixture in three portions, alternating with the milk in two additions. Begin and finish with the flour mixture, mixing just until incorporated.
Fold the batter briefly with a spatula to incorporate any remaining flour. Divide evenly among the prepared muffin cups.
Bake. Bake for 20–25 minutes, until the tops spring back when lightly pressed and a toothpick inserted into the center comes out clean or with a few moist crumbs.
Let the muffins rest in the pan for about 5 minutes, then carefully loosen and transfer them to a wire rack.
While the muffins are still warm, quickly dip each one in melted butter, turning to cover the top and sides. Allow excess butter to drip off, then roll in the spiced sugar.
Place the coated muffins on the rack and serve warm or at room temperature.