Preheat the oven to 180℃ fan / 200℃ / 390 ℉.
Line a baking tray with baking paper / parchment.
Toss the butternut squash cubes with the olive oil, cinnamon, cayenne, nutmeg, chopped sage, thyme and salt and black pepper.
Tip on to the lined baking tray, add the whole cloves of garlic, and roast for 20 minutes, until tender.
Turn the oven up to 220 ℃ fan / 235℃ / 455℉.
Line two baking sheets with baking paper.
Cut the pizza dough in half and roll each half out into a circle. Place on the lined baking sheets.
Squeeze the roasted garlic out into the ricotta, and mix with black pepper.
Spread half of this mixture over one of the pizza bases.
Sprinkle over half the mozzarella, then half the anchovies and half of the roasted butternut squash.
Rub the sage leaves with a little of the anchovy oil - or olive oil - and scatter half over the pizza.
Repeat with the other pizza base and rest of the ingredients.
Place in the oven and bake for 10-15 minutes until the cheese and pizza crust are golden brown.
Best enjoyed straight away, however leftovers can be stored, covered, in the fridge for up to 24 hours.