Orange Cinnamon Chocolate Chip Muffins

2 1/2 cups flour
1/2 teaspoon baking soda
1/4 teaspoon ground cinnamon
1/2 teaspoon salt
3/4 cup butter, softened
11/2 cups sugar
3 eggs
1 teaspoon vanilla
1 cup sour cream
Juice of 1 orange (or about 1/4 cup)
2 Tablespoons orange zest
1 -2 cups semisweet chocolate chips

Combine the flour, baking soda, cinnamon and salt in a bowl and set aside.

In a large bowl, cream butter and sugar until smooth.  Beat in eggs.  Add vanilla, sour cream, orange juice and zest and beat until well combined.

Add in flour mixture and beat on low speed until incorporated.  Fold in chocolate chips.

Spoon into muffin cups and bake for 20-25 minutes or until an inserted toothpick comes out clean.

Cool and serve.