Instructions

1. In a heavy-bottomed sauté pan over low heat, heat the olive oil and sauté the pancetta, garlic and red pepper flakes. Cook slowly, stirring occasionally, until most of the fat is rendered from the pancetta and it is lightly browned, about 15 minutes.
2. While pancetta is cooking, bring a large pot of salted water to a boil. Cook the spaghetti according to package directions, until it is tender but firm.
3. Warm a large bowl by filling it with hot water; drain water, then whisk the egg and cheese together in heated bowl. After spaghetti has just been drained, immediately toss hot spaghetti with the egg and cheese mixture, pancetta and any fat remaining in the sauté pan.
4. Season with kosher salt and freshly ground pepper. Pass additional Parmesan and the pepper grinder.