Cheesy Zucchini Lasagna Roll-Ups | No-Watery Mess Italian Dinner - Taste Of Cook

Ingredients

• 4 large zucchini
• 1 teaspoon salt, divided
• 1 tablespoon olive oil
• ½ small sweet onion, finely diced
• 3 garlic cloves, finely minced
• 1 pound (450g) 90/10 ground beef
• 2 cups shredded mozzarella cheese, divided
• 1 cup whole milk ricotta
• ½ cup grated Parmesan cheese
• 1 large egg
• 2 teaspoons Italian seasoning
• ¼ teaspoon black pepper
• 1 jar (24-ounce/680g) marinara sauce
• Fresh flat-leaf parsley, chopped (for garnish)