01 -
Grate blocks of cheddar and Monterey Jack, then let them sit out to reach room temperature for better melting.
02 -
In a tall pan or dutch oven, heat over medium-high heat and cook ground beef. Once browned, pour off any grease.
03 -
Toss butter into the same pot and add your minced garlic. Stir and let cook just long enough to smell it—about a minute.
04 -
Pour in taco seasoning, Worcestershire sauce, both broths, milk, tomato paste, and the Rotel. Stir well until everything blends.
05 -
Let the mix gently bubble, toss in the shell pasta, and make sure it's all under the liquid. Cover the pot and cook, stirring halfway through to keep stuff from sticking to the bottom.
06 -
Lift the lid, grab a shell, and take a bite. If it's not quite soft enough, cover again and wait a few more minutes.
07 -
Turn heat to low and carefully mix in the cheeses a bit at a time. Stir constantly so everything melts into a creamy sauce.
08 -
Let the pasta rest for a few moments; the sauce will thicken and soak in. Serve when texture looks just right.