Cinnamon Chip Banana Muffins

2 1/4 C all-purpose flour
1 Tbsp baking powder
1/2 tsp baking soda
1/2 tsp salt
2 1/4 C ripe mashed banana
1/2 C granulated sugar
1/2 C sour cream
1/4 C vegetable oil
3 large egg yolks
1 tsp vanilla extract
1 C pecan or walnut pieces (I didn’t use)
3/4 C cinnamon chips
Preheat the oven to 400 degrees.

1.Mix together the flour, baking powder, baking soda, and salt together in a large bowl.
In a separate bowl, combine the mashed banana, sugar, sour cream, vegetable oil, egg yolks, and vanilla together.
2.Add all the wet ingredients to the dry ingredients and stir just until the ingredients are mixed well.  Do not over stir.  Overstiring muffins makes them tough.  Fold in the nuts and chips.

3.Fill the well-greased tins about 2/3 to 3/4 full.  

4.Bake for 8 minutes at 400 degrees.  Reduce the temperature to 350 degrees and bake for another 8 to 10 minutes or until done.  Let sit for five minutes and remove the muffins from the pan to a rack to cool.