I think that combo would be fine. I usually add whatever veggies I have in the frig. I saute onion or leek, some garlic if I feel like it. I've added broccoli, green beans, spinach, carrots, squash, mushrooms and cauliflower (not all together) the various times I've made it and all have been fine. The polenta crust is nice b/c it doesn't get soggy like a wheat crust does, so I think it can tolerate wetter items.