Casserole Brokoli Krim

Bahan-bahan (4 porsi)

• 600 g / 1.2 lb broccoli florets (, small to medium (2 large heads, Note 1))
• 60 g / 4 tbsp unsalted butter
• 4 g arlic cloves (, minced)
• 6 tbsp plain flour
• 2 cups milk (, preferably warm (full or low fat))
• 1 1/2 cups chicken broth/stock (, preferably warm)
• 1.5 cups cheddar cheese, freshly grated ((Note 2))
• 1/2 cup grated parmesan cheese
• Salt and pepper
• 1/2 cup panko breadcrumbs
• 1/4 cup grated parmesan cheese
• 20 g / 1.5 tbsp unsalted butter, melted