Halve and seed 1 small butternut squash; slice ½ inch thick. Toss with olive oil on a rimmed baking sheet; season with salt. Broil, flipping halfway through, until lightly charred, about 16 minutes. Top with plain Greek yogurt, toasted sesame seeds, golden raisins and chopped cilantro and scallions. Drizzle with olive oil and lime juice.