Heat a medium saute pan or heavy-bottomed pot over medium-high heat. Add the oil, then the noodles. Saute, stirring, for a few minutes, until most of the noodles are lightly browned. Add onion and cook 3 to 4 minutes, until translucent. Add tomato sauce and stir for 1 minute, then add broth. Bring to boil, stirring, then reduce the heat to low and cook for 15 minutes.
