Seafood Lasagna

Ingredients

• 1 green onion, finely chopped
• 2 Tbsp. vegetable oil
• 2 Tbsp., plus 1/2 c. butter or margarine, divided
• 1/2 c. chicken broth
• 8 oz. bottle clam juice
• 1 lb. bay scallops
• 1 lb. uncooked small shrimp, peeled and deveined
• 8 oz. imitation crabmeat, chopped
• 1/4 tsp. white pepper, divided
• 1/2 c. all-purpose flour
• 1 1/2 c. milk
• 1/2 tsp. salt
• 1 c. whipping cream
• 1/2 c. shredded Parmesan cheese, divided
• 9 lasagna noodles, cooked and drained