In a large pot heat the olive oil for 30 sec at medium-high heat. Add onion and garlic and saute' for 3 min.
Add the cauliflower, white beans, broth, salt, thyme, turmeric. Stir, bring to boil.
Reduce the heat to minimul and simmer for 25/30 min.
Using an immersion blender transform into a smooth puree. Serve warm with a drizzle of olive oil and parmesan cheese on top.