Lettuce soup is tasty and you can freeze it. Arugula isn't a lettuce and would probably not go well in lettuce soup but if you have a lot you could always experiment. You can also braise lettuce and cook it with peas.

Use in place of tortillas to make sandwich wraps.
Chop and toss into soups, like other greens.
Share with friend/neighbors.
Donate to food pantry or homeless shelter.

What a wonderful problem to have!

Deanna

I've gotta move south (DH wants to)! We don't eat salads in the winter b/c the winter tomatoes and cukes are so bad. And by the time my tomatoes come in, the lettuce is bolting...