Heat 2 tablespoons olive oil in a large saucepan over medium heat until hot.
Add the finely chopped onion, finely chopped celery, and minced garlic and cook, stirring occasionally, until the vegetables are tender, about 5 minutes.
Pour in the 54 ounces of canned crushed tomatoes and stir to combine.
Add the roughly chopped basil, 1/2 teaspoon salt (or to taste), and 1/2 teaspoon black pepper; stir well.
Bring the sauce to a boil over medium-high heat, then reduce the heat to low, cover, and simmer gently for 40 minutes.
Remove from heat and serve immediately, or let cool completely before storing.