Ingredients (13)

1 lb 93% lean ground beef

1 1/2 teaspoons kosher salt

1 tsp olive oil

1/2 large onion

3 cloves garlic

1 28 oz can crushed tomatoes

2 tbsp chopped fresh basil

black pepper

3 medium

1 1/2 cups part-skim ricotta

1/4 cup Parmigiano Reggiano

1 large egg

16 oz 4 cups shredded part-skim mozzarella cheese