Banana-Chocolate Chip Muffins (King Arthur)

Ingredients

• 1/2 cup butter
• 1/2 cup packed brown sugar
• 3/4 tsp baking soda
• 1/2 tsp salt
• 1/2 tsp cinnamon
• 1/4 tsp nutmeg
• 1 tsp vanilla
• 1 1/2 cup mashed ripe banana (about 3 bananas)
• 1/4 cup honey
• 2 eggs
• 2 cups whole wheat flour
• 2/3 cup chocolate chips