Set a large pot of water to boil and season with enough salt so that it tastes like the ocean. Add penne pasta and cook until al dente. Drain and rinse with cold water to stop the cooking. Set aside.
Preheat the oven to 400ºF.
Add olive oil to a large pan at medium heat and then sauté diced onions for 5-7 minutes until tender and translucent. Add minced garlic and 1 teaspoon of kosher salt and sauté until fragrant, about 2-3 minutes.
Add in ground beef and complete seasoning and occasionally stir until the ground beef cooks through and you can no longer see any pink. Add in the Italian seasoning, tomato sauce, sugar, and 1/2 teaspoon of kosher salt and black pepper. Bring the sauce to a simmer for 5-10 minutes.
Combine the meat sauce and pasta and add them into a baking or casserole dish. I used two loaf pans. Top with mozzarella cheese and leave in the oven until the cheese is nice and melted. I like to leave it in the oven until the cheese starts getting those little bubbly brown spots, about 10-15 minutes.