01 - Preheat the oven to 425°F. Line a baking sheet with parchment paper.
02 - Arrange bell pepper quarters skin-side up on the prepared baking sheet. Roast for 20–25 minutes until skins are blistered and charred. Remove from oven, cover tightly with foil, and let steam for 10 minutes. Peel away the skins and slice peppers into strips.
03 - While peppers roast, rinse millet thoroughly under cold water. Combine millet, water, and salt in a saucepan. Bring to a boil, then reduce heat to low, cover, and simmer for 15 minutes until liquid is fully absorbed. Remove from heat and let stand covered for 5 minutes. Fluff grains with a fork.
04 - In a large mixing bowl, combine the warm millet, roasted pepper strips, sliced red onion, halved cherry tomatoes, and baby spinach or arugula.
05 - In a small bowl, whisk together the olive oil, lemon juice, Dijon mustard, maple syrup, minced garlic, salt, and pepper until emulsified.
06 - Pour the dressing over the salad and toss gently until all ingredients are evenly coated.
07 - Fold in the chopped parsley and sliced basil. Scatter toasted seeds and crumbled feta over the top if desired. Serve warm or at room temperature.