This grilled macaroni and cheese sandwich is filled with tender braised short ribs and umami-rich steak sauce. I used velveeta macaroni and cheese because it was all I had on hand, but you should totally use some of the good stuff. I recommend using one of our Southern Food Expert's mac n cheese recipes because she has about a million of them and they all look amazing.
To read more about this sandwich or to view step-by-step photography, click [HERE] to visit the original post on my blog GrilledCheeseSocial.com
1. Begin by building the sandwich. Take each bun and smear each of them with some steak sauce. On the bottom bun, pile on the cheddar, the short ribs, the leftover mac n cheese, the gruyere, and top it with the other half of the onion bun and butter the exterior of the sandwich
2. In a cast iron skillet, or a panini press, place your sandwich in and turn the heat to medium high. I recommend using a panini press because it heats from both sides which allows the cheese to melt evenly while toasting the bread at an appropriate speed.
Let the sandwich cook for a few minutes until all the cheese has melted and the exterior of the bread is crisp and toasty.
3. Remove from heat and let the sandwich sit for a minute so that the cheese will thicken up and act as glue to the sandwich. Serve.