Caramel Apple Muffins

Ingredients

• 2 cups all-purpose flour
• 3/4 cup sugar
• 2 teaspoons baking powder
• 2-1/2 teaspoons ground cinnamon
• 1/2 teaspoon salt
• 1 large egg, room temperature
• 1 cup 2% milk
• 1/4 cup butter, melted
• 2 teaspoons vanilla extract
• 1/2 cup chopped peeled tart apple
• 12 caramels, chopped
• TOPPING:
• 1/2 cup packed brown sugar
• 1/4 cup quick-cooking oats
• 3 tablespoons butter, melted
• 1 teaspoon ground cinnamon