Bring a pot of water to a boil, then cook pasta until it’s done. Drain pasta, then pour it back into the pot.
For the sauce: heat 1 tbsp olive oil and garlic cloves in a large saucepan and cook garlic for 1-2 minutes. Transfer garlic and olive oil to a blender, then add the remaining sauce ingredients except the basil to the blender and pulse for 1 minute or until the sauce is smooth and creamy. If you don’t own a high-power blender, use a food processor instead.
Pour the sauce over the pasta, or pour the pasta into the saucepan with the sauce and stir to combine. Before serving, distribute pasta onto plates, then sprinkle with fresh basil and red pepper flakes.