2. In a skillet, cook onion in butter over medium heat until tender. Remove from heat, and stir in cream cheese, cottage cheese, egg, basil, and salt and pepper.
3. In a medium bowl, mix together the soup, milk, wine, crabmeat, and shrimp.
4. Lay 3 cooked lasagna noodles on the bottom of a 9x13 inch baking dish. Spread 1/3 of the onion mixture over the noodles. Then spread 1/3 of the soup mixture over the onion layer. Repeat the noodle, onion, soup layers twice more. Top with Cheddar cheese and Parmesan cheese.
5. Bake in preheated oven for 45 minutes, or until heated through and bubbly.