Spray a deep based pan with frylight and saute the onions, garlic and bacon until the onions have softened.
Now add everything else except the lemon and parsley and simmer for 15-20 minutes, keeping a close eye that it doesn’t boil over.
Now fish out the bay leaf (pun intended) and stir in the lemon and parsley. Note: if you wish it to be creamier, give it a few presses with a hand blender or blend a 3rd of the soup in a blender and pour back into the pan.