Preheat the oven to 390 °F. Toss the sweet potatoes with 1 tsp olive oil, season with salt and pepper, and bake for 35 minutes.
In a separate tray, toss the cauliflower with 1 tsp olive oil, season with salt and pepper, and bake for 25 minutes.
Boil the broccoli and green beans for 2 minutes. Immediately transfer to cold water to cool down, then drain.
Whisk together the Dijon mustard, olive oil, balsamic vinegar, and lemon juice to make the dressing.
In a large bowl, combine the broccoli, green beans, sweet potato, cauliflower, arugula, cashews, pistachios, feta, lentils, dill, and dressing. Adjust salt and pepper to taste. Enjoy your nutritious and hearty salad!
