Tuna, Cheese, and Rice Casserole Recipe

Ingredients (15)

• 6 tablespoons unsalted butter, divided
• 1/4 cup minced onion
• 1/4 cup coarsely chopped celery
• 3 tablespoons all-purpose flour
• 1/8 teaspoon ground black pepper, or to taste
• 1/2 teaspoon dry mustard
• 1/2 teaspoon Worcestershire sauce
• 2 cups milk
• 2 cups shredded sharp cheddar cheese, divided
• 1 (7-ounce) can tuna
• 1 to 1 1/2 cups cooked frozen or canned peas, drained
• 2 tablespoons diced pimento
• Kosher salt, to taste
• 4 cups hot cooked rice
• 1 cup fresh breadcrumbs