I think you will LOVE these pumpkin muffins! They are the definition of moist, with a rich, pumpkin spice flavor. And, topped with a buttery, crunchy streusel topping.
Add all of the wet ingredients (eggs, oil, sugar, pumpkin) into a mixing bowl. Beat well to combine.
In a separate mixing bowl, add the dry ingredients (flour, baking powder, baking soda, salt, and spices).
Slowly spoon the dry ingredients into the wet ingredients, stirring between each addition until combined.
Make the streusel. In a small bowl, add flour, sugar, cinnamon and melted butter. Toss with a fork to wet the dry ingredients with the butter. It will make a sandy mixture with some clumps.
Add batter to a greased muffin tin. Spoon the streusel topping over the top of each cavity with batter.
Bake for 25-30 minutes, or until the muffins have risen with no wiggle to the middle of them. The streusel topping should be crunchy, but not burned.