Zucchini Lasagna

Name: Zucchini Lasagna
Prep time: 45 min
Cook time: 1 h 30 min
Total time: 2 h 15 min
Cuisine: Italian
Ingredients: 1 lb 93% lean ground beef; 1 1/4 teaspoons kosher salt; 1 tsp olive oil; 1/2 large onion (chopped); 3 cloves garlic (minced); 1 28 oz can crushed tomatoes; 2 tbsp chopped fresh basil; black pepper (to taste); 3 medium (8 ounces each zucchini, sliced 1/8" thick); 1 1/2 cups part-skim ricotta; 1/4 cup Parmigiano Reggiano; 1 large egg; 16 oz 4 cups shredded part-skim mozzarella cheese