Banana Chocolate Chip Muffins

Ingredients

• 1-1/2 cups all-purpose flour
• 2/3 cup sugar
• 1 teaspoon baking soda
• 1/4 teaspoon ground cinnamon
• 1/8 teaspoon salt
• 1 large egg, room temperature
• 1-1/3 cups mashed ripe bananas (about 3 medium)
• 1/3 cup butter, melted
• 1 teaspoon vanilla extract
• 1/2 cup semisweet chocolate chips