Blanch the spinach.
Then plunge it into iced water.
Blend it to a puree.
Set aside.
In a pan, melt some butter with a tablespoon of cumin.
Add the chopped garlic and onion and cook until golden.
Add the turmeric.
Add the tomato passata.
Add the fromage blanc.
Add the spinach puree.
Add the garam masala.
Add the tablespoon of flour and the paneer.
Stir together.
Let it simmer for 5 minutes and serve.