Here is a great sandwich that solves these issues, is creative, delicious, and is definitely "bar food". It's major components can be made ahead of time, and assembled in a snap.
This recipe makes 3 large sandwiches. They can be cut in half to feed 6.
BAR STYLE POT ROAST SANDWICH
INGREDIENTS
1 1-2LB CHUCK ROAST
1 Small package baby carrots
1 large brown onion
1 green bell pepper
1 red bell pepper
1 yellow bell pepper
3 12" pizza doughs
Olive oil
Crushed garlic
Salt & pepper
1 to 1 1/2pounds mozzarella cheese, shredded
Italian flat leaf parsley
Prepared creamy horseradish
Note: I have found it easier to buy my pizza dough from the local pizza joint. If you want to go the extra step and make your own, by all means, go for it!
HARDWARE
Crock pot
Pizza stone
Pannini maker
At least 5 hours before you expect to eat, put roast in crock pot, with carrots. Salt and pepper to taste. Cook until it shreds with a fork on high. Once done turn cockpot to "keep warm" setting if equipped. It will keep until ready to use.
Pre heat oven to 500, or highest setting, with pizza stone in it. Roll out pizza dough to oval shape, about 1/4" thick. CAREFULLY, remove pizza stone from oven, and put dough on stone. Drizzle a little olive oil on dough. Spread crushed garlic to taste (a little goes a long way!). Finely chop parsley. Top dough with cheese, and sprinkle on parsley to taste. You have to work fast. Place back in oven, cook until cheese is melted.
Remove from oven. This is the bread for one sandwich, repeat with other 2 doughs. Trim off crusts, this will hold fine covered for a couple hours.
Dice onions and peppers to 1/4" pieces. Put about a tablespoon of olive oil in a large frying pan, add peppers and onions. Cook on medium high heat until soft, about 8 minutes.
When you are ready to eat, assemble sandwiches. Put helping of pot roast on a piece of cheese bead, cheese side up, top with peppers, onions, horseradish, and top piece of bread cheese side down. If you don't like horseradish, it can be substituted for something like deli mustard. You can also omit it, and enjoy with au jous, like a beef dip. The choice is yours.