Preheat oven to 200°c.

Place olive oil in a frying pan over high heat. When it is very hot, add garlic and mushrooms and cook quickly until mushrooms are just wilted but not releasing any liquid. Add the spinach and lemon juice and allow spinach to just wilt.

Season with salt and cracked black pepper, then remove from heat.

Spread the pizza bases with goats' cheese and place on a baking tray.

Pile the mushroom mixture on top and drizzle with a little more oil. Bake in oven for 10 minutes. Sprinkle with chives to serve and a dollop of creme fraiche, if desired.