Cauliflower-Garlic Sauce - Penguin Books Australia

Ingredients

• 2 tablespoons olive oil
• 1 medium yellow onion, diced
• 2 garlic cloves, thinly sliced
• 1 teaspoon salt, plus more for the pasta water
• ½ teaspoon red pepper flakes
• 1 large cauliflower, cut into small florets
• 1 pound (454 g) pasta of choice
• ½ cup (60 g) grated Parmesan, plus more for serving