At least 2 hours ahead of time, mix yogurt, spices, lemon juice in a small bowl, refrigerate until ready to use. Preheat oven to 375 degrees F. Break cauliflower into small to medium sized florets. Toss in a large bowl with salt, pepper and olive oil. Spread on a cookie sheet in one layer and bake in pre-heated oven for about 15 minutes until beginning to soften. Remove from oven and return to large bowl. stir chopped cilantro into yogurt/spice mixture and spoon over califlower. toss to coat well (you may not need ALL of the yogurt, depending on how large of a head of cauliflower you have). return to baking sheet and continue to bake for about another 5-10 minutes (cook to your liking, some prefer some crunch left in their veggies). remove from oven and enjoy!