Sour Cream Coffeecake Muffins

I made them today and wanted to share the recipe for them.  They are so good and moist!

1/2 cup softened butter
1/2 cup sugar
2 eggs
1 cup sour cream
1 tsp vanilla
2 cups flour
1 tsp baking powder
1 tsp baking soda
1/4 tsp salt

Marble Mixture
1/2 cup brown sugar
1/2 cup finely chopped walnuts
1 tsp Cinnamon

Cream sugar and butter.  Add eggs, sour cream and vanilla.  Mix in flour, baking powder, soda and salt.  Beat well.  With a knife, cut the marble mixture into the batter.  Do not mix.  Spoon batter into 12 lined muffin cups or that are well greased.  Sprinkle the rest on the sugar mixture on the top.  Bake at 375 for 22 minutes.

*White Fence Bed and Breakfast