Heat a large sauté pan over medium-high heat with the EVOO and butter. Add the onions and cook until caramelized, 5-6 minutes.
Add the sliced Brussels sprouts, allspice, sage, some salt and freshly ground pepper and toss to combine. Add the stock, bring up to a bubble, then reduce the heat and simmer until the Brussels sprouts are tender, about 15 minutes.
In the last three minutes of cooking, stir in the radicchio.
This is one of many “Yum-o!” recipes – it’s good and good for you. To find out more about Yum-o!, Rachael’s nonprofit organization, go to www.yum-o.org.