Cheesy Lasagna Soup

Ingredients

• 1 pound ground chuck
• 1 tablespoon olive oil
• ⅛ teaspoon ground nutmeg
• 3 medium garlic cloves, finely chopped
• 8 ounces whole-milk ricotta cheese
• 2 ounces Parmesan cheese, finely grated
• 1 medium-size yellow onion, chopped
• 1 ½ tablespoons granulated sugar
• 8 ounces uncooked lasagna noodles, broken into 1½- to 2-inch pieces
• 1 tablespoon red wine vinegar
• 4 ounces low-moisture mozzarella cheese, shredded
• ¼ cup small basil leaves
• 2 cans diced tomatoes
• 1 ¼ teaspoons kosher salt, divided
• 6 cups chicken stock