Spaghetti Lasagna

Name: Spaghetti Lasagna
Ingredients: 1 lb. spaghetti; 2 eggs, lightly whisked (divided); 1/2 c. finely grated Parmesan; 2 tbsp. extra-virgin olive oil; 1 onion, chopped; 3 garlic cloves, minced; 1 lb. ground beef; 2 tbsp. tomato paste; 1 28 oz can crushed tomatoes; 1/4 tsp. dried oregano; 3 c. ricotta; 3 c. shredded mozzarella; 2 tbsp. chopped Italian parsley