01 - Preheat oven to 400°F. Line a large baking sheet with parchment paper and set aside.
02 - Toss the diced butternut squash and sliced red onion with 1 tablespoon olive oil, salt, and pepper. Spread in an even layer on the prepared baking sheet. Roast for 25–30 minutes, tossing halfway through, until the squash is tender and caramelized at the edges.
03 - While the squash roasts, combine the rinsed quinoa and water or vegetable broth in a medium saucepan. Bring to a boil over medium-high heat, then reduce to low, cover, and simmer for 15 minutes until all liquid is absorbed. Remove from heat and fluff with a fork.
04 - In a small bowl, toss the chopped pecans with maple syrup, olive oil, sea salt, and cinnamon until evenly coated. Spread onto a separate parchment-lined baking sheet and bake at 400°F for 8–10 minutes, stirring once halfway, until fragrant and golden. Remove and let cool completely.
05 - In a small bowl or mason jar, whisk together the olive oil, apple cider vinegar, maple syrup, Dijon mustard, salt, and pepper until fully emulsified and smooth.
06 - Divide the fluffed quinoa among 4 bowls. Arrange the roasted squash and onions, fresh spinach or arugula, and maple pecan crunch over each portion. Drizzle generously with the prepared dressing. Finish with crumbled feta and chopped parsley if desired.