Preheat oven to 400 degrees F. Line muffin pan with liners. Set aside.
In medium bowl whisk together flour, oats, baking soda, and pumpkin pie spice. Set aside.
In a medium size pot, melt butter. Remove from heat.
Whisk into the melted butter the eggs, sugar, vanilla and milk.
Stir butter mixture into the flour mixture.
Stir in pumpkin.
Scoop into muffin liners.
In a small bowl mix together melted butter, flour, brown sugar and pumpkin pie spice till it crumbles.
Evenly divide onto the top of each muffin, pressing down gently.
Bake for 12 - 15 minutes.
Cool and ENJOY!