First, prepare your mise en place: gather your ingredients, which include: extra virgin olive oil, roughly chopped onions, sliced garlic, pinch of crushed red pepper flakes (optional), open canned tomatoes, tomato paste, salt/pepper, and rinsed fresh basil. Set aside.
Next, heat up a couple tablespoons of olive oil in a large saute pan or skillet over medium heat. Once heated, add the onions and sweat them down until translucent in color (about 3-4 minutes).
Then, add the garlic and cook until fragrant/golden brown. Add the crushed red pepper flakes and infuse it in the oil for about a minute.
Next, add tomato paste and canned tomatoes to the saucepan and stir until well combined. If using whole peeled tomatoes like me, crush the tomatoes in the pan with a masher or spatula. Taste and season with salt, pepper, and basil. Bring to a boil and then reduce heat to low and simmer for at least 15 minutes (may simmer longer for better results).
Remove from heat and enjoy with some pasta, bread, or other foods! Yummmy!