Preheat the oven to 400˚F (200˚C) and line a baking sheet.
In a medium bowl, toss butternut squash pieces with olive oil, cumin, salt, and pepper.
Spread out on a baking sheet and bake in the oven for 30 minutes or under tender and turning golden. Remove and set aside.
Meanwhile, rinse quinoa in a colander, drain, then place in a small saucepan with vegetable stock. Bring to a boil, then reduce to a simmer and cover for 10-15 minutes, until all liquid has been absorbed. Take off heat and allow to cool.
Arrange spinach leaves at bottom of the salad. Top with cooled quinoa, followed by
roasted butternut squash, crumbled feta, and roasted pepitas.
Drizzle with balsamic glaze and salt and pepper to taste and serve.