01 - Preheat the oven to 425°F. Line a baking sheet with parchment paper.
02 - Toss the broccoli florets and red onion slices with 2 tablespoons olive oil, salt, and freshly ground black pepper until evenly coated. Spread in a single layer on the prepared baking sheet.
03 - Roast for 20–25 minutes, stirring halfway through, until the broccoli is golden and crisp-tender with lightly charred edges.
04 - While the vegetables roast, rinse the millet under cold running water. In a medium saucepan, combine the millet, 2 cups water, and 1/2 teaspoon salt. Bring to a boil over medium-high heat, then reduce to low, cover, and simmer for 15–18 minutes until all liquid is absorbed. Remove from heat and let stand, covered, for 5 minutes. Fluff with a fork.
05 - In a small bowl, whisk together the tahini, lemon juice, 1 tablespoon olive oil, maple syrup or honey, and minced garlic. Gradually add 2–3 tablespoons of water, whisking until the dressing reaches a smooth, creamy, pourable consistency. Season with salt and pepper to taste.
06 - In a large mixing bowl, combine the warm fluffed millet with the roasted broccoli and red onion. Drizzle the lemon-tahini dressing over the top and toss gently until everything is evenly coated.
07 - Transfer to a serving platter and top with toasted pumpkin seeds, chopped parsley, and crumbled feta cheese if desired. Serve warm or at room temperature.