Great risotto - it doesn't sound good on paper but somehow it really works well in the final product. I substituted cauliflower for the broccoli (it was what I had on hand), -and used the mushroom broth instead of vegetable, and it was fantastic. Just the right amount of creaminess and bite, and a great recipe for people who are making risotto for the first time.
I was slightly skeptical at first, but this really is good. I've made it twice now, substituting mushroom broth for the vegetable broth (per Damien's suggestion). Very tasty.