For the Muffins
1/2 cup unsalted butter, melted
1 cup packed brown sugar
2 tablespoons molasses
1 teaspoon vanilla extract
1/2 cup pumpkin puree
1 1/2 cups all purpose flour
1/4 teaspoon salt
1/4 teaspoon baking powder
1/4 teaspoon baking soda
2 teaspoons cinnamon
1 teaspoons ginger
1/4 teaspoon clove
1/8 teaspoon nutmeg
2/3 cup cinnamon chips
In a medium bowl whisk the brown sugar, butter, and molasses together until no lumps remain. Whisk in the vanilla and pumpkin, and set aside.
In a large bowl sift together the baking powder, baking soda and flour. Stir in the spices and salt. Pour the pumpkin mixture into the large bowl and stir together until a soft dough forms.
Add the cinnamon chips. They may not want to stick to the dough, but try to get them as evenly distributed as you can.
Cover the dough with wax paper and chill for 30 minutes.
After chilling line a muffin tin with baking cups. These muffins are extremely rich so I suggest regular or mini muffins. Jumbo muffins are almost too much for this recipe.
Preheat the oven to 350 degrees. For regular muffins roll just over 1/4 cup dough into a ball, and place in the muffin cup. For mini muffins use just over 1/8 cup.
Bake the muffins for 15-20 minutes or until a toothpick inserted in the center comes out clean. These muffins don't rise much but they will expand to fill the cups.
Cool the muffins for at least 10 minutes before frosting.
For the icing
4 oz cream cheese
1/8 cup unsalted butter, softened
1/2 teaspoon vanilla extract
1 teaspoon cinnamon
1 cup powdered sugar
Mix all together, and spoon onto cooled muffins. Lightly sprinkle cinnamon on top.