1 tablespoon mayonnaise; 1 tablespoon stone-ground mustard; 4 slices whole-grain bread; 2 slices provolone cheese; 10-12 blackberries, cut in half; Heat medium skillet over low heat.

A new poll reveals that America's favorite sandwich is the grilled cheese, followed by chicken, and turkey. The sandwich also found that Americans on average eat six sandwiches a week.

The bread, whether rye, Pullman, challah or baguette, needs to be fresh. It should be properly lubricated with the sauce, aioli, jam or spread of your choosing.