Start by preparing the beet. Switch on the oven at 300° F (180° C). Wrap the beet in aluminum foil and bake it for 45 minutes until a tootpick can pierce the vegetable with no resistance.
In the mean time start preparing your veggies: roughly chop the radicchio, slice finely the fennel and the radish. Peel the orange, remove the skin, and cut the slices in half.
Chop the red onions thinly.
Make the dressing by whisking together salt, pepper, vinegar, EVOO, Dijon mustard, chives and freshly squeezed orange juice.
Toast the sourdough bread and cut It in squares of half inch length.
Remove the beet from the oven, peel it and chop it.
Now take a plate: add the radicchio, fennel, radish, oranges, onions, bread and the dressing. Mixed everything and serve it!