Chocolate Pumpkin Muffins

Details

Ingredients

• 1 cup all-purpose flour
• ¼ cup cocoa powder
• 1 tablespoon pumpkin pie spice
• ½ teaspoon baking soda
• ¼ teaspoon baking powder
• ¼ teaspoon salt
• ¾ cup brown sugar
• 1 cup pumpkin puree
• 2 large eggs
• ¼ cup vegetable oil
• ¼ cup sour cream
• 1 teaspoon vanilla extract
• 1 cup chocolate chips, divided