Grandma's Favorite Lasagna | Recipe Saver

Ingredients

• ***For the meat sauce:***
• 3 tablespoons extra-virgin olive oil
• 3/4 pound lean ground beef
• 3/4 pound sweet Italian sausage, casings removed
• 1 medium onion, chopped
• 2 carrots, peeled and chopped
• 2 stalks celery, chopped
• kosher salt, to taste
• 6 cloves garlic, minced
• 2 teaspoons dried oregano
• 1/2 teaspoon red pepper flakes
• 3 tablespoons tomato paste
• 2 (28-ounce) cans whole peeled tomatoes
• ***For the cheese mixture:***
• 3 cups ricotta
• 1 cup milk
• 3 large eggs
• 1 1/4 cups Parmigiano-Reggiano, finely grated, divided
• 4 cups low-moisture mozzarella, shredded, divided
• 3/4 cup flat-leaf parsley, chopped, plus more, to taste, for garnish
• freshly ground pepper, to taste
• 18 lasagna noodles