Raab. My first time, year before last, I only had a couple of plants. Just enough for a meal for the two of us. This year I dug two or three little troughs, (I can't recall which) sprinkled seeds in and covered them up. My intention was to thin the plants when they sprouted, but I never got around to it. As it turns out, that was a good thing.
Broccoli Raab acts more like lettuce than regular Broccoli. So, plant it densely, just like you would salad greens. Harvest and cook the heads and the leaves.
The picture above was taken yesterday. You can see that it has already produced small heads. It's perfect for picking. By today it is already starting to flower. Broccoli Raab flowers are edible, too, but when it starts to flower, it's on its way out.