Preheat the oven to 450 F. Line a rimmed baking sheet with parchment paper or silicone baking mat.
Halve the Brussels sprouts and cut the butternut squash into 1/2-inch cups. Place the Brussels sprouts face side down and sprinkle the butternut squash cubes into a single layer on the baking sheet.
In a small mixing bowl, whisk together the maple syrup, olive oil and mustard. Add 1 Tbsp of water and whisk together to make it easier to drizzle. Drizzle over the veggies on the baking sheet.
Roast in the preheated oven for 25 to 30 minutes or until the larger butternut squash pieces are fork tender.
Meanwhile, cook the bacon and chop into crumbles.
Once the veggies are cooked, let them cool slightly before transferring to a serving dish or storage container and mixing in the cranberries, crumbled bacon pieces and feta cheese. Serve warm as yummy Fall and winter side dish. Enjoy!