Sage Sausage and Zucchini Lasagna

Ingredients

• 1 lb Sage Sausage from Foris Meats
• 1 large onion, chopped
• 2 garlic cloves, minced
• 2 cans (28 ounces each) crushed tomatoes
• 1 can (6 ounces) tomato paste
• 1/3 cup fresh parsley, minced
• 2 tsp sugar
• 1 tsp dried basil
• 1 tsp dried oregano
• 1/4 tsp pepper
• 3 medium zucchini, sliced lengthwise
• 1 tbsp butter
• 1 large egg
• 15 oz ricotta cheese
• 3/4 cup plus 2 tablespoons grated Parmesan cheese, divided
• 6 lasagna noodles, cooked and drained
• 8 cups shredded part-skim mozzarella cheese, divided