Preheat an oven to 350 degrees. Prepare the cold fathead dough by laying half the dough on a sheet tray lined with wax or parchment paper. Place another sheet of paper over the dough, and roll the dough to a ¼-inch thickness in a rectangular shape.
Step 2
Remove the top sheet of paper. Distribute both cheeses evenly on top of the fathead dough, leaving about an inch of bare space around the edge of the dough.
Step 3
Between two sheets of new wax or parchment paper, roll the other half of fathead dough to the same thickness and size as the first piece. Transfer the dough over the top of the “grilled” cheese. Trim the edges if necessary.
Step 4
Let the prepared recipe chill in the refrigerator for about 10 minutes to firm up. Bake the grilled cheese in the oven for 25 minutes, until the dough is golden brown and cooked through. Slice into 4 triangle pieces for serving.