Mix the dried yeast with warm water in a cup and set aside. In a large glass or ceramic bowl combine evenly flour and salt
Pour the yeast mixture into the bowl with flour and start mixing with your hand. It will be quite sticky, which is what we want. Once you have no dry flour left behind, place the dough onto dusted with flour counter and start kneading. Up to max 5 min. Just until your dough is smooth
Roll the dough into a log and cut 4 equal pieces (for a large pizza cut in two). Shape each piece to a ball and place it on a tray dusted with flour. Cover with a tea towel. Let it rise in a dry and warm place for at least 2h
Meanwhile, we will prepare our toppings. Cut the peeled onions in half and chop into 1cm slices. On a frying pan, preheat 2 tbsp of olive oil on medium heat, and start cooking the onions. Once they start being translucent add vinegar and sugar. Let it cook for 5min stirring from time to time. Place in a bowl and set aside
Add washed spinach gradually into a preheated (medium setting) deep frying pan. Let it cook for 5 to 10 minutes. Add crushed garlic and season with salt and pepper to taste
In a bowl mix passata with oregano, a pinch of salt and pepper
Once your dough is ready, preheat oven to 210 degrees Celcius. Stretch your dough into the desired circle size, and place it on a baking tray. Spread tomato sauce on top. Leave a thin rim off the pizza dry. Sprinkle shredded cheese, add spinach, caramelized onion and chunks of blue cheese
Bake in the oven for 7 to 10 min. All done! Enjoy!