Healthy Apple Muffins - No Getting Off This Train

Ingredients

• 4 tablespoons butter, melted
• 1/2 cup applesauce
• 1/2 cup honey
• 1/2 cup plain Greek yogurt
• 1/4 cup milk
• 2 eggs
• 1 teaspoon vanilla extract
• 1 teaspoon baking soda
• 1/2 teaspoon baking powder
• 1/2 teaspoon salt
• 1 1/2 teaspoons cinnamon
• 1 1/2 cups white whole wheat flour
• 1 medium apple, cored and diced