Add olive oil to a large pot (See Note 1), heat up under medium heat, then add minced garlic to pot. Cook for 15 seconds or so, then add ground beef.
Cook ground beef until it is almost done, then add crushed tomatoes, tomato sauce, dried basil, oregano, marjoram, and sugar. Stir and bring to a boil, then add salt and pepper to taste. Bring heat to low, and cook for 15-20 minutes. Remove from heat.
While red sauce is cooking, fill a smaller pot with water, add a pinch of salt, and bring to boil, then add ziti pasta and cook a minute less than the instructed cook time (typically anywhere between 8-11 minutes). Drain water when done (See Note 2).
While pasta is cooking, bring ricotta cheese, 1/2 lbs of shredded mozzarella, 1/4 cup of parmesan cheese to a medium bowl and mix well. Set aside the remaining mozzarella and parmesan cheese for later.
Pre-heat oven to 350 degrees F.
When pasta and red sauce are done, bring drained pasta to sauce and toss to combine.
In a 9" x 13" casserole dish, add 1/2 of the pasta and red sauce to the bottom layer, then spread all the cheese filling to the next layer, then add the rest of the pasta and red sauce. Sprinkle the rest of the mozzarella and parmesan cheese (set side on step 4) to the top.
Bake in the oven for 20 minutes. Remove and let it cool for 10 minutes.
Serve and enjoy!