Pumpkin Streusel Muffins

1/4 cup butter, softened
1/2 cup sugar
1/4 cup packed brown sugar
2/3 cup cooked or canned pumpkin
1/2 cup buttermilk
2 eggs
2 TBSP molasses
1 teaspoon orange peel
2 Cup flour
2 Tsp baking powder
1 tsp baking soda
1 tsp pumpkin pie spice
1/4 cup salt

Topping-
1/3 flour
3 TBSP brown sugar
2 TBSP cold butter
- combine and cut into mixture-
Sprinkle crumb mixture over batter

Bake at 275 degrees for 20-25 minutes