Prep the squash: Cut the acorn squash in half and scrape out the seeds. Cut into evenly sized slices. You can leave the skin on, the skin is edible when roasted.
Build the sheet pan: Add the acorn squash, gnocchi, and sliced chicken sausage to a large sheet pan. Drizzle generously with olive oil and season with garlic powder and kosher salt. Spread everything into an even layer, leaving space between the ingredients.
Roast: Roast for 10 minutes. Remove from the oven and toss everything.
Add the kale: Add the chopped kale to the sheet pan and roast for another 7 minutes.
Add cranberries: Sprinkle the dried cranberries over the sheet pan and roast for 2 more minutes.
Make the sauce: While the vegetables roast, whisk together the apple cider vinegar, olive oil, maple syrup, Dijon mustard, and kosher salt.
Serve: Drizzle the maple Dijon sauce over the warm sheet pan dinner and serve immediately.