Zucchini Banana Blueberry Muffins

Ingredients (14)

• 1 1/2 cups white whole wheat flour
• 3/4 teaspoon baking powder
• 3/4 teaspoon baking soda
• 1/2 teaspoon salt
• 1 teaspoon ground cinnamon
• 2 medium ripe bananas
• 1/4 cup granulated sugar
• 1/4 cup packed light brown sugar
• 1 large egg
• 1/3 cup melted coconut oil
• 1 teaspoon vanilla extract
• 1  cup shredded zucchini
• 1 cup blueberries
• 2 tablespoons turbinado sugar