Take raw cubed squash and toss with a drizzle of olive oil, salt, pepper, and cinnamon. Lay on a lined baking sheet and bake for about 25 minutes or until tender enough to eat. Once cooked, let the squash cool to room temperature, about 15-20 minutes.
While the squash cools, prepare the other ingredients. Crumble the goat cheese, shave or thinly slice the brussel sprouts, and chop the green apple. Add to a bowl atop arugula leaves and pepitas. Once the squash has cooled, add it to the salad and toss lightly.
To make the dressing, at all the ingredients to a bowl or cup and stir with a fork until combined, then immediately drizzle over the salad and toss once more to fully incorporate.
Notes
Macronutrients: 18g carb, 13g fat, 7g protein
This can easily be made vegan by subtracting the cheese.
You can purchase pre-cubed butternut squash at most large grocery stores, but if you have a whole squash and aren't sure how to process it, see the above paragraph on how to make the salad.