01 - Preheat oven to 400°F. Toss the diced sweet potato with 1 tablespoon olive oil, smoked paprika, ground cumin, and a generous pinch of salt and pepper. Spread in an even layer on a baking sheet and roast for 25 to 30 minutes, flipping halfway through, until golden brown and fork-tender.
02 - While the sweet potatoes roast, combine the rinsed quinoa and water in a small saucepan. Bring to a rolling 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 gently with a fork.
03 - Heat the remaining 1 tablespoon olive oil in a large skillet over medium heat. Add the sliced red onion and sauté for 2 to 3 minutes until softened and translucent. Stir in the minced garlic and cook for 30 seconds until fragrant. Add the spinach and toss until just wilted, about 1 to 2 minutes. Season with salt and pepper, then remove from heat.
04 - Cook the eggs to your preferred style — fried, poached, or soft-boiled — in a separate skillet or pot. Season lightly with salt and pepper.
05 - Divide the fluffy quinoa evenly between two serving bowls. Arrange the roasted sweet potatoes and sautéed spinach and onion mixture alongside the quinoa. Place one egg on top of each bowl. Finish with crumbled feta, fresh herbs, and sliced avocado if desired.