Balsamic Marinated Steak with Pesto Mashed Potatoes

I bought these weird thinly sliced steak strips that called themselves sandwich strips.  I figured I'd marinate them, grill them, put them between some bread, and do the whole sandwich thing.  Well, my bread went bad, but I was hungry, so I figured I'd treat these steaks how I normally would a skirt or a flank steak.

I went for a balsamic-based marinade, so into the ziploc bag went the balsamic vinegar, salt/pepper, rosemary, garlic, and a touch of olive oil.  Into the fridge it went while I sliced some red onion and scallion (onion overkill? probably. but they were all i had in terms of complimentary produce).

I then made some mashed potatoes, because nothing goes better w/ steak than potatoes.  I mashed with cream cheese and pesto sauce, rather than milk and cheese, for a little variation.

Finally, it was time to cook the steak.  It took about three minutes since it was so thin, and I didn't want to overcook.  Heat the skillet over medium-high heat.  Add your steak, red onions, and the juices.  Cook the steak about 1-2 minutes per side.  Turn over, repeat.

Plate your mashed potatoes, lay your steak atop them, and drizzle with some of the red onions and reduced balsamic vinegar marinade.  Garnish with some fresh scallions if you're feeling like your breath won't be pungent enough already.