01 - Rinse quinoa thoroughly under cold water. Combine quinoa, water, and salt in a medium saucepan. Bring to a boil, then reduce heat to low, cover, and simmer for 15 minutes until all water is absorbed. Remove from heat and let sit covered for 5 minutes. Fluff with a fork and allow to cool.
02 - Preheat grill or grill pan over medium-high heat. Lightly oil the grates to prevent sticking.
03 - Brush mango slices lightly with olive oil. Grill for 1-2 minutes per side until grill marks appear and mango is lightly caramelized. Remove from heat, let cool, then cut into bite-sized pieces.
04 - Whisk together olive oil, lime juice, honey or maple syrup, Dijon mustard, cumin, salt, and pepper in a small bowl until fully emulsified and smooth.
05 - Combine cooked quinoa, grilled mango, avocado, cherry tomatoes, red onion, cilantro, mint, and arugula or spinach in a large bowl.
06 - Drizzle dressing over the salad and toss gently to combine. Taste and adjust seasoning as needed. Serve immediately or refrigerate for 30 minutes to allow flavors to meld together.