01 - Preheat the oven to 425°F.
02 - Rinse the barley under cold water. In a medium saucepan, combine the barley and vegetable broth. Bring to a boil, reduce the heat, cover, and simmer for 25 to 30 minutes until tender. Drain any excess liquid.
03 - While the barley cooks, toss the asparagus and cherry tomatoes with 1 tablespoon of olive oil, salt, and pepper. Spread evenly on a baking sheet and roast for 12 to 15 minutes until tender and slightly caramelized.
04 - In a small bowl, whisk together the remaining olive oil, lemon zest, lemon juice, Dijon mustard, honey, salt, and pepper until well emulsified.
05 - In a large bowl, combine the warm barley, roasted asparagus and tomatoes, sliced red onion, and arugula. Drizzle with the dressing and toss gently until everything is evenly coated.
06 - Sprinkle with crumbled feta cheese and toasted almonds. Serve warm or at room temperature.