Preheat 2 baking sheets in a 450 degree oven. Quarter 4 pounds carrots lengthwise and toss with 1/4 cup olive oil and 3/4 teaspoon each salt and pepper. Spread on the hot baking sheets and roast until browned, 18 to 20 minutes. Toss with 4 teaspoons za'atar (a spice blend available at Middle Eastern markets), 3 tablespoons chopped parsley and the juice of 1 lemon.
If you are concerned if the oils or other ingredients in these recipes are suitable for Passover, seek non-dairy substitutes or ingredients that are certified kosher for Passover.