Buttermilk Banana Muffins – Moist & Fluffy with Walnuts

Ingredients

• 1 cup buttermilk
• 2 tablespoons butter
• 2/3 cup canola oil
• 1 cup brown sugar
• 2 ripe bananas
• 1/2 cup applesauce
• 1 teaspoon vanilla
• 3 eggs
• 1 1/2 cups all-purpose flour
• 1/2 cup whole-wheat flour
• 3/4 teaspoon baking soda
• 1 1/2 teaspoons baking powder
• 3/4 teaspoon salt
• 1 teaspoon cinnamon
• 1 cup chopped walnuts