Prince® - Tuna Stuffed Manicotti with Cheese Sauce

Ingredients

• 8 oz Prince® Manicotti
• 3 Tbsps butter
• 2 Tbsps flour
• 1 3/4 cups milk
• 8 oz shredded sharp Cheddar cheese
• 8 oz part-skim ricotta cheese
• 1 can (5 oz.) tuna, drained and flaked
• 1 each egg, slightly beaten
• 1 can (2.25 oz.) sliced ripe olives, drained
• 1/3 cup celery, chopped
• 2 oz shredded Parmesan cheese
• 1 Tbsp dried parsley flakes
• salt and ground black pepper, to taste