Cheesy Broccoli And Rice Casserole

Name: Cheesy Broccoli And Rice Casserole
Ingredients: 2 slices hearty white sandwich bread, torn into pieces; ¾ cup grated Parmesan cheese; 4 tablespoons unsalted butter, melted; plus 2 tablespoons, chilled; 1 garlic clove, minced; 2 pounds broccoli, florets cut into 1-inch pieces, stems peeled and chopped; 1 onion, chopped fine; 1¼ cups long grain white rice; 4 cups low-sodium chicken broth; 1¼ cups half-and-half; 1 teaspoon salt; 2 cups shredded extra-sharp cheddar cheese; ⅛ teaspoon cayenne pepper