Bundt Pan Lasagna

Name: Bundt Pan Lasagna
Ingredients: Nonstick cooking spray, for the bundt pan; Kosher salt; 15 lasagna noodles (from a 1-pound package); 1 tablespoon olive oil; 1 pound ground beef; 2 cloves garlic, finely chopped; 1 small onion, finely chopped; One 24-ounce jar marinara sauce; One 10-ounce box frozen chopped spinach, thawed; One 16-ounce container whole-milk ricotta; 1/2 cup grated Parmesan, plus more for topping; 2 large eggs; 1 pound thinly sliced fresh mozzarella; 2 tablespoons chopped fresh flat-leaf parsley