Add olive oil to a deep and wide skillet and heat overmedium-high flame. Add ground beef and cook for 3 minutes.
Continue cooking and start crumbling beef until thoroughly cooked, about 3 minutes. Then transfer the cooked beef to a large plate linedwith paper.
Reduce heat; add 1 tbsp of olive oil and sauté onion for few minutes. Add garlic and sauté for 1 minute.
Add crushed tomatoes, cooked beef, tomato paste, water,basil, salt, pepper, and oregano.
After bringing to a light boil, reduce heat to low. Cover and simmer until onions are soft and tender. Inspect the thickness of the sauce andadd a little more water if you like thin sauce.
Stir in parmesan cheese until melted. Remove from heat. Garnish with parmesan and fresh parsley.
Serve the sauce with cooked spaghetti and enjoy!