Step 1

Finely dice the onion. Add the olive oil, onion, and ground beef to a large deep skillet and sauté over medium heat until the beef is fully browned and the onion is soft and transparent. Drain off any excess fat, if needed.

Step 2

Add the flour to the skillet and continue to stir and cook for one minute more. The flour will form a paste that may coat the bottom of the skillet. Be careful not to let the flour burn.

Step 3

Add the tomato sauce, broth, and pasta to the skillet. Stir to combine the ingredients and dissolve any of the flour off the bottom of the skillet.

Step 4

Place a lid on the skillet, turn the heat up to medium-high, and let the liquid come up to a boil. Once it reaches a boil, give it a quick stir, replace the lid, and turn the heat down to medium-low. Let the pasta simmer, stirring occasionally, for 10-12 minutes, or until the pasta is tender and the sauce has thickened. Turn the heat off.

Step 5

Add the cheddar, a handful at a time, and stir until it has melted into the sauce. Stir the hot dog relish into the sauce and then top with sliced green onions. Serve hot.