1Combine all-purpose flour, brown sugar, granulated sugar, cinnamon, and melted unsalted butter in a bowl and mix until crumbly to make the cinnamon streusel.
2Combine granulated sugar and cinnamon in a small bowl to create the cinnamon swirl mixture.
3Line the muffin tin with muffin liners.
4In a large bowl, combine all-purpose flour, cake flour, granulated sugar, baking powder, baking soda, salt, cinnamon, pumpkin spice, large eggs, vegetable oil, and pumpkin puree.
5Whisk the pumpkin muffin mixture until well combined.
6Pour the pumpkin muffin batter into the prepared muffin liners.
7Sprinkle the cinnamon swirl mixture over the muffin batter.
8Add more pumpkin muffin batter on top of the cinnamon swirl mixture.
9Top with the cinnamon streusel mixture.
10Bake the muffins at 425°F for 5 minutes, then reduce the temperature to 350°F and bake for 15-17 minutes, totaling 20-22 minutes.
11Combine powdered sugar, milk, maple syrup, and pumpkin spice in a bowl to make the glaze.