Preheat your oven to 425°F. Toss cubed butternut squash with 1 tbsp olive oil, salt, and pepper on a baking sheet. Roast for 20 minutes until golden and tender at the edges, stirring halfway through cooking.
While squash roasts, heat the remaining olive oil in a large skillet over medium-high heat. Season chicken cubes with salt, pepper, and ground sage, then cook for 8-10 minutes until golden brown and cooked through completely.
Add minced garlic and diced red onion to the chicken, cooking for 2 minutes until fragrant. Pour in vegetable broth and bring to a simmer, then add halved Brussels sprouts and cook for 5 minutes until just tender.
In the final minutes of cooking, stir in chopped kale and cinnamon, letting it wilt into the warm hearty fall butternut bowl recipe base. The residual heat will soften the kale without overcooking it, maintaining its nutritional value.
Divide cooked quinoa among four bowls as your base layer. Top with roasted squash, chicken mixture, and then drizzle with balsamic vinegar for brightness.
Finish each bowl with dried cranberries and pumpkin seeds for delightful texture contrast. Taste and adjust seasonings with additional salt, pepper, or sage as desired before serving warm.