8 large fennel bulbs - trimmed and cut into 8 wedges
3 large Spanish onions - trimmed and cut into 8 wedges
4 large sprigs rosemary
1/4 cup olive oil - plus more for drizzling
sea salt
freshly ground tellicherry black pepper
10 cups low sodium chicken stock
1/4 cup chopped dried cranberries
1/4 cup roughly chopped lightly toasted hazelnuts