In a medium pot, heat the olive oil over medium heat. Add in the onion and carrots. Cook until softened, 5-7 minutes.
¼ cup olive oil, 1 yellow onion, ½ cup finely grated carrot
Stir in the garlic and red pepper flakes. Cook until fragrant, about 1 minute.
3 cloves garlic, ⅛ teaspoon crushed red pepper flakes
Stir in the crushed tomatoes, tomato paste, salt, pepper, oregano, and sugar.
28 ounces canned crushed tomatoes, 6 ounces tomato paste, ¼ teaspoon kosher salt, ⅛ teaspoon ground black pepper, 1 tablespoon dried oregano, 2 teaspoons granulated sugar
Bring the mixture to a simmer and cook for 20-30 minutes, stirring occasionally. As the sauce thickens, you may want to put the lid on the pot to prevent splatters. If the sauce gets too thick, add a splash of water.
Taste and adjust seasonings. Stir in the fresh basil and serve.
½ cup torn fresh basil