chocolate oatmeal banana muffins

Ingredients For chocolate oatmeal banana muffins

• 1 c

  brown sugar
• 2

  eggs
• 1/2 c

  oil, vegetable
• 3

  banana, mashed
• 3 Tbsp

  sour cream
• 1 tsp

  vanilla extract
• 1 c

  flour
• 1 tsp

  baking soda
• 1 Tbsp

  baking powder
• 1\2 tsp

  salt
• 1/3 c

  cocoa
• 3\4 c

  oatmeal
• 1 c

  walnuts, chopped, optional