Low-Carb Spaghetti Sauce

In a large saucepan over medium heat, heat oil. Add garlic and tomato paste and cook, stirring constantly, until very fragrant, 2 minutes.  Add crushed tomatoes, then fill can with 1/2 cup water and swirl to catch any remaining tomato, and pour into pan. Season mixture with oregano, red pepper flakes, and a generous amount of salt and pepper. Stir in basil and let simmer until reduced, about 30 minutes.