Confession: I can't stand to call sandwiches "sandwich" anymore. The Japanese "sando" is really much more convenient.
Unexpectedly good. And I generally have these ingredients on hand for an indulgent snack. Pair with green salad and chopped apple (use grated apple + apple cider vinegar and salt for the dressing).
Butter 2 slices bread. Sprinkle salt, garlic powder and pepper over the buttered side.
On the other side, spread whole grain/dijon mustard. Top with thin slices of apple and thin slices of white cheddar cheese. Top with other slice of bread.
Heat a skillet to medium high. Place sandwich in and let the butter warm up a little, 30 sec to 1 min. Flip over. Using a heavy pan, press down on the sandwich while it cooks on that side, 2-3 minutes.
Flip over, then replace the heavy pan press and cook on the final side a minute or two until down. The pressing actually works well- gives it a great texture in the sandwich (and approximates a panini press quite well). It also improves the texture of the bread.