Rinse kidney beans cold, drain. Wash the thyme, shake dry, pluck the leaves. Peel onion and garlic clove, chop both finely. Heat olive oil. Fry the onion, garlic and thyme for about 3 minutes.
Add beans and water. Bring to the boil and cook at low heat for about 25 minutes. Roughly mash the beans with a fork, stirring in the Ajvar. Season to taste with salt and pepper.