I try to pack my husband a lunch every day, but salads are always an issue. Either I have to pack salad dressing separately or he has to deal with soggy greens from the dressing sitting on them for too long. No more! I saw this great idea on Pinterest from fat girl trapped in a skinny body and tried it. It works great! I did not try her dressing recipe (although it looks yummy - I love balsamic vinegar) but used bottled dressing that I had on hand.
Just be sure to put the dressing in the bottom of the jar and put enough other veggies in to keep the greens from touching the dressing. I had just come back from out of town and didn't have very many fresh veggies in the refrigerator, so my salad consists only of sliced mushrooms, chopped green onion, and spinach. When you are ready to eat, shake the jar before opening and enjoy.