I do not like frozen veggies without any salt. When I take spinach or broccoli out of the freezer, I put it into a small plastic container with a tiny bit of water. I then salt it and put the cover on. I shake it about to coat with the salted water. This way I don't need and butter or anything else. In the microwave, it is done in a jiffy and tastes great.
Total Time: 10 minutes