Cut the cauliflower florets into bite size pieces. Slice the brussels sprouts in half or quarter. Layer the veggies on a large cookie sheet. Drizzle oil, zaatar spice mix and salt. Give it a massage. Place the cookie sheet in the middle rack of the oven and roast for 35 minutes, tossing once in between.
For the dressing, whisk orange juice, maille original mustard sauce, maple syrup and salt in a glass or a jar.
Once the veggies are roasted, add raisins, lettuce and pour the dressing. Toss it around and serve warm.