Heat oil and butter in a pot over medium-high heat (I used a 5qt).
Once it's nice and hot, add in the chopped onions and cook for five minutes; stirring occasionally.
Add in the garlic and let cook for one minute.
Throw in the ground beef and cook until completely browned. Use a wooden spoon to chop up the meat finely.
Add in the salt, a few cranks of black pepper, basil, and oregano and stir until combined.
Add in crushed tomatoes, stir until well combined and let come to a boil.
Once the sauce reaches its boiling point, cover with a lid and lower the heat to a simmer.
Simmer for 30 minutes.