1Heat oil in a medium saucepan over medium heat. When oil shimmers, add garlic and cook until fragrant but not browned, about 1 minute. Add tomato paste, stir to incorporate, and cook until raw flavor is gone, about 4 minutes. Add crushed tomatoes and oregano and stir to combine.
2Bring to a simmer, then reduce heat to low. Cook, stirring occasionally, until thickened, about 15 minutes. Remove from heat and let cool before using to top pizza.