Step 1

Preheat oven to 400 degrees. Line a baking sheet with parchment or foil for easy clean up.

Step 2

In a large skillet over medium-high heat, cook bacon until crispy. Remove bacon from skillet, chop, and set aside. Reserve 1/4 cup rendered bacon fat and discard the rest (or add olive oil to reach 1/4 cup fat).

Step 3

In a large bowl, add Brussels sprouts, squash, cranberries, and rosemary. Drizzle with bacon fat and toss to coat. Spread evenly in a single layer on prepared baking sheet, arranging the sprouts cut-side down as much as possible.

Step 4

Bake until vegetables begin to brown and are tender, about 40 to 45 minutes. Remove from oven and transfer to serving dish. Add chopped bacon, walnuts, and salt and pepper to taste and toss to combine.