1 large head of cauliflower
Kosher salt, freshly ground pepper
2 tablespoons unsalted butter
¼ cup raw shelled pumpkin seeds
½ teaspoon crushed red pepper flakes
¼ cup chopped fresh cilantro, plus leaves with tender stems for serving
1 tablespoon fresh lime juice
Meanwhile, melt butter in a small skillet over medium. Add pumpkin seeds, bring to a simmer, and cook, swirling pan occasionally, until pumpkin seeds are toasted and butter is browned and smells nutty, 6–8 minutes. Remove from heat and add red pepper flakes; let cool 10 minutes. Add chopped cilantro and lime juice; season with salt and pepper.
Arrange cauliflower on a serving platter and drizzle with dressing. Serve topped with cilantro leaves.