Start by washing and cleaning the tomatoes, and I'd recommend you peel them, as they will be much creamier that way.
Cut the tomatoes into chunks and place them into a big mixing bowl.
Squeeze them instead of blending them, as the blender will turn them into liquid, and you want to feel the small tomato chunks in the marinara.
Place the squeezed tomatoes in a non-stick saucepan after you put some olive oil on it.
Turn the plate on medium heat and let the tomatoes heat up.
Stir the tomatoes while they are cooking and add olive oil little by little.
Follow the consistency and don’t add too much oil as you will notice grease floating on the surface; you don’t want that.
Now, depending on the speed and capacity of your stove, the simmering may take from 40 minutes to an hour.
Observe the color of the sauce, as it should be bright red. If the color starts to get darker, you have either gone too far with the simmering or used too much oil. If you have used too much oil, try and strain the excess oil, and if you went a little too far with the cooking, remove the marinara sauce immediately from the stove, blend a tomato and add it to the sauce to freshen it up.
A few minutes before you remove your marinara sauce from the stove, add the minced garlic, the salt, and the basil leaves and stir them in.
Stir for up to five minutes and remove the pan from the stove.
Let the sauce settle for ten to 15 minutes, and enjoy.