Preheat the oven to 400°F. In a large bowl, combine the flour, sugar, baking powder, cinnamon, and salt. In the center, form a well.
In another bowl, combine the milk, canned pumpkin, butter and egg; Mix well. Pour into the center well of the flour mixture.
Add the chocolate chips and mix until entire mixture is moist. muffins4
Spoon the mixture into greased muffin pans (or use muffin papers), filling about 3/4 full.
If you want the nuts, sprinkle 1 teaspoon of chopped nuts over each muffin. (I actually added mine to the batter with the chocolate chips, because we like them inside the muffins)
Bake for 20 minutes at 400 degrees. Remove from oven and allow to cool for 5 minutes. Remove muffins from pan and allow to cool on wire racks. Makes 12 deliciously moist muffins.