Preheat the oven to 390 degrees F / 200 C.
Mix dry ingredients in a bowl, whisk until well combined.
Add the olive oil and water to the flour mixture, mix to form a dough.
Turn dough out onto a lightly floured work surface and knead for 2-3 minutes until dough is smooth.
Allow dough to rest for 10 minutes.
While the dough is resting, prepare the topping by heating the oil and sautéing the sliced onion until caramelized.
Add the sliced mushrooms and garlic, continue to cook until soft and fragrant.
Remove from heat and set aside. Drain any excess liquid before using.
Cut the dough in half to make two 8 inch round pizzas.
Roll each portion of dough to approx. ½ inch thickness in between 2 sheets of parchment paper. Remove the top sheet of paper.
In a small bowl mix both cheeses together.
Place dough onto pizza pans and divide the topping between each pizza base.
Sprinkle each pizza with fresh thyme and cheese.
Bake for 10-15 mins or until cooked through.
Cut each pizza into 8 pieces. Serve topped with a sprinkle of fresh thyme.