Parmesan Cauliflower Steaks with Marinara

Bahan-bahan (4 porsi)

• 1 large head of cauliflower
• 2 to 3 tablespoons olive oil
• 1 ounce finely grated Parmesan (about ¾ cup)
• Salt and freshly ground black pepper
• 8 ounces whole grain spaghetti
• 25 ounces marinara sauce
• Optional garnishes: more grated Parmesan, more pepper and/or pinch red pepper flakes