St. Patty Melt
Swiss chard or escarole would also be lovely. You can also try this with spinach. You need enough greens to yield about 1 1/2 to 2 cups, once boiled and chopped.
You can use any cheese you want; for me, the perfect pairing with the greens is a nice sharp white Cheddar.
Using enough salt is the secret to making delicious greens; the salted water in which you boil the greens should taste like sea water.
A splash of regular vinegar with a pinch of sugar will work instead of seasoned rice vinegar.