Spaghetti Cauliflower Garbanzo

Ingredientes

6 oz. pasta (such as egg tagliolini, bucatini, or spaghetti)

3 Tbsp. unsalted butter, cubed, divided

1 tsp. coarsely ground black pepper, plus more

¾ cup finely grated Grana Padano or Parmesan cheese

⅓ cup finely grated Pecorino Romano cheese

1 Small cauliflower head

Can of garbanzo beans

Mushrooms