Mini Cinnamon Sugar Pumpkin Muffins

and 3/4 cups (218g) white-whole wheat flour (or all-purpose flour)

and 1/2 teaspoon baking powder

salt

ground cinnamon

pumpkin pie spice

nutmeg

(1/2 stick; 60g) unsalted butter, melted and slightly cooled

packed light or dark brown sugar

large egg

and 1/2 teaspoon pure vanilla extract

pumpkin puree (not pumpkin pie filling)

milk

(1/2 stick; 60g) unsalted butter

granulated sugar

 Tablespoon ground cinnamon