01 -
Warm a skillet on medium-high and cook the beef with onion, salt, and a bit of pepper. Once there’s no pink, drain the grease.
02 -
Load cooked beef, broth, tomatoes, cilantro, seasonings, uncooked spaghetti, and water into the slow cooker (6-quart). Push down the noodles so they’re covered.
03 -
Set to HIGH for 2 hours or LOW for 3 1/2 to 4 hours. Peek at the noodles after 1 1/2 hours to check softness.
04 -
Turn off the slow cooker, mix in cheese till it melts, and sprinkle some extra cilantro on top.