Favorite Caramel Apple Blondies with Browned Butter Frosting

Name: Favorite Caramel Apple Blondies with Browned Butter Frosting
Prep time: 15 min
Cook time: 20 min
Total time: 35 min
Cuisine: American
Ingredients: ⅔ cup butter (softened); 2 cup brown sugar (packed ); 2 large eggs; 2 teaspoons pure vanilla extract; 2 cup all-purpose flour; 2 tsp baking powder; ½ tsp salt; 1 tsp ground cinnamon; 1 cup peeled (diced apple (approximately 1 large apple)); ½ cup English Toffee Baking Bits; ½ cup butter; 1 cup brown sugar; ¼ cup half and half; 2 to 2 ½ cup powdered sugar (aka confectioners) (sifted)