Place the baking sheet with the plain cheese sandwiches in the oven and bake for 2 to 3 minutes, or until the cheese is beginning to melt. (If the sandwiches came straight from the refrigerator, it may take another minute or two.) The bread will not be very brown, but don’t worry; this step is to get the cheese melting. Remove the baking sheet from the oven, set aside, and put the bacon sandwiches in the oven for 2 to 3 minutes. Meanwhile, move the plain sandwiches to the hot griddle. Watch the sand¬wiches on the griddle carefully; they will toast quickly, 30 to 60 seconds on the first side. Turn and brown on the second side, then transfer to a cutting board. The bacon sandwiches should be coming out of the oven right about the time the plain sandwiches are coming off the griddle. When there is space on the griddle, add the bacon sandwiches, and place the jalapeño sandwiches in the oven for 2 to 3 minutes. Continue in this manner until all of the sandwiches have been baked and grilled.