In 4-quart Dutch oven, cook spaghetti as directed on package.
Meanwhile, in 1-quart saucepan, heat oil, garlic, basil and pepper flakes over low heat 10 minutes to infuse flavor into the oil. Strain oil; keep oil warm. Discard garlic, basil and pepper flakes.
Drain cooked spaghetti. Return spaghetti to Dutch oven; place over medium heat. Add tomatoes; toss until thoroughly heated. Season to taste with salt.
Divide spaghetti into 2 individual pasta bowls. Drizzle each serving with warm oil; sprinkle with cheese.