How to Make It
In a spice grinder or mortar, crush the cumin seeds to a powder. In a small bowl, combine the lemon juice, lemon zest and garlic with 1 teaspoon salt. Whisk in the cumin, paprika and coriander, then whisk in the olive oil.
In a medium bowl, toss the mushrooms with 1/2 cup of the dressing and season with salt and pepper. In a large bowl, toss the spinach with the scallions, cilantro and the remaining dressing. Add the mushrooms and toss well. Season with salt and pepper and serve.