Cheesy Broccoli & Rice Casserole Recipe - (4.6/5)

Ingredients

• 6 tablespoons unsalted butter, divided
• 1 cup panko, Japanese breadcrumbs
• 2 cups shredded extra sharp Cheddar cheese, divided
• 3 cups reduced sodium, fat-free chicken broth
• 2 cups milk
• 1 bay leaf
• 1 fresh thyme sprig
• 2 cups onion, chopped
• 1/2 cup celery, diced
• 1 (8 ounce) package sliced cremini mushrooms
• 1 teaspoon kosher salt, divided
• 1 pinch freshly ground black pepper
• 1 pinch ground red pepper
• 2 garlic cloves, minced
• 1/4 cup all-purpose flour
• 1 1/2 cups uncooked long-grain rice
• 1/2 cup sour cream
• 1/2 cup mayonnaise
• 1/8 teaspoon freshly grated nutmeg
• 3 cups fresh broccoli florets, about 2 heads