Asparagus Casserole - Miz En Place

Ingredients

• 3 tbsp unsalted butter, divided
• 1/2 cup panko breadcrumbs
• 3 pounds asparagus, trimmed and cut into 2-inch pieces
• 1 tbsp finely chopped garlic
• 2 tbsp all-purpose flour
• 2 cups whole milk
• 5 ounces cream cheese
• 1/2 cup shredded part-skim mozzarella cheese
• 1 tsp salt