Preheat oven to 425°F and line a jumbo muffin pan with paper liners.
Whisk together the flour, baking powder, baking soda, salt, pumpkin pie spice, and cinnamon.
In a separate bowl, whisk together melted butter, oil, brown sugar, sugar, pumpkin puree, eggs, egg yolk, buttermilk, and vanilla.
Add the dry ingredients to the wet ingredients and stir just until combined.
Let the batter rest for 15–20 minutes.
Mix together the streusel ingredients until crumbly.
Fill muffin liners almost full and generously top with streusel.
Bake at 425°F for 6 minutes.
Reduce the oven temperature to 350°F without opening the oven and bake for an additional 20–24 minutes.
Cool for 10 minutes before serving.
Drizzle with maple glaze if desired.