Double Cheddar Rotisserie Chicken Lasagna

Name: Double Cheddar Rotisserie Chicken Lasagna
Prep time: 30 min
Cook time: 45 min
Total time: 1 h 15 min
Cuisine: American
Ingredients: 2 tablespoons salted butter; 2 medium carrots, cut into matchsticks; 1 medium onion, diced; 1 clove garlic, minced; 1 small head broccoli, cut into florets; 0.5 cup chicken broth; 1 rotisserie chicken; 4 tablespoons salted butter; 4 tablespoons all-purpose flour; 3 cups 1% milk; 1 cup shredded white Cheddar cheese; 2 teaspoons garlic salt; 2 cups shredded Cheddar cheese; 1 (8 ounce) package oven-ready lasagna noodles; 3 tablespoons panko bread crumbs