Surprisingly easy and made from readily available ingredients.
In a soup pot, heat the olive oil over medium heat. Add onion and cook until golden brown, about 10 to 12 minutes. Stir in peas and lima beans. Season with salt and pepper. Cook, stirring occasionally, for 10 minutes. Stir in the water, bring to a boil and reduce to a simmer. Cook until the beans and peas are soft, about 20 minutes. With a blender or food processor, puree the soup until velvety. Season with salt and pepper. Serve each bowl drizzled with olive oil.