Pasta Kembang Kol Mentega Bawang Putih dengan Pangritata

Bahan-bahan (3 porsi)

• 1 to 2 slices bread (, crusts removed, preferably stale (enough to make 1/2 cup))
• Oil spray ((preferably olive oil))
• 2 tbsp unsalted butter
• 1 tbsp olive oil
• 2 g arlic cloves (, smashed (Note 1))
• 1/2 large head of cauliflower (, broken/cut into florets about 2"/5cm long (about 4 to 5 cups) (Note 2))
• 8 oz / 250 g fettuccine ((or pasta of choice))
• 1/2 red onion (, thinly sliced)
• 1/2 to 1 tsp red chili flakes
• 1 lemon (: 2 tbsp lemon juice + zest of 1/2 the lemon)
• Salt & pepper
• Parmesan cheese (, freshly grated)
• Fresh parsley (, finely chopped (optional))