Assemble your sandwich
Grease up your skillet with either some spray oil or some butter.
Place the skillet over high heat.
Once the skillet is hot plop your sandwich down and carefully place the weight on top of the sandwich.
Let it grill for 2 to 3 minutes, take the weight off, flip the sandwich, place the weight back on, and let it continue grilling for another 2 to 3 minutes
Take the sandwich off the grill and eat immediately!