Caramel Apple Muffins

Name: Caramel Apple Muffins
Prep time: 15 min
Cook time: 20 min
Total time: 35 min
Cuisine: American
Ingredients: 1 cup all-purpose flour; 1 cup whole wheat flour; 1 teaspoon baking powder; 1/4 teaspoon fine sea salt; 1/2 teaspoon ground cinnamon; 4 tablespoons unsalted butter (softened); 1/2 cup granulated sugar; 1 egg; 1 teaspoon pure vanilla extract; 1 cup milk; 1 large apple ((about 8 ounces) peeled, cored, and cut into 1/2-inch chunks); 3/4 cup caramel bits; 1/3 cup all-purpose flour; 2 tablespoons granulated sugar; 2 tablespoons brown sugar; 2 tablespoons unsalted butter; 1/4 cup caramel bits