Preheat the oven to 425 degrees.
Mix up the butter ingredients – this can be done in advance and the mixture just wait for you in the fridge.
Arrange the brussels on a sheet pan. Drizzle with the oil and salt and toss to coat. Roast for 15-20 minutes, until golden, crispy, and tender.
Add the walnuts; return to the oven for 3-5 minutes to get the walnuts toasted. Remove from the oven.
Add the cranberries and butter while the pan is still warm; toss to combine.
You’re done! Yum! The butter will melt and coat every nook and cranny. It’ll smell amazing and it’s such a delight to eat!
