Smore Muffins

3 Tb butter, softened
1/4 c packed brown sugar
4 tsp sugar
1 egg
1/3 c sour cream
2/3 c flour
1/2 c graham cracker crumbs
1/4 tsp salt
1/4 tsp baking powder
1/4 tsp innamon
1/8 tsp baking soda
3 Tb milk
1/3 c milk chocolate chips
6 Tb marshmallow creme

Cream butter and sugars together until light and fluffy.  Beat in egg.  Stir in sour cream.
Combine flour, graham cracker crumbs, salt, baking soda and cinnamon; add to creamed mixture alternately with milk until moistened.  Fold in chocolate chips
Coat 6 muffin cups with cooking spray and fill 1/4 full with batter.  Spoon 1 Tb marshmallow cream into each muffin cup. Top with remaining batter.
Bake at 400 for 14-16 min (until inserted toothpick comes out clean)  Cool for 5 min. before removing from pan.  Serve warm.