01 - Heat olive oil in a large pot over medium heat. Add the diced onion and cook for 3 to 4 minutes, stirring occasionally, until soft and translucent.
02 - Stir in the minced garlic and cook for 1 minute until fragrant, being careful not to let it brown.
03 - Add the tomato paste to the pot and stir continuously for 1 minute to caramelize and deepen its flavor.
04 - Pour in the diced tomatoes, drained white beans, vegetable broth, dried basil, oregano, and smoked paprika. Stir well to combine all ingredients.
05 - Bring the soup to a gentle boil, then reduce the heat to low. Simmer uncovered for 15 to 20 minutes, allowing the flavors to meld and the soup to slightly thicken.
06 - Remove the pot from heat. Use an immersion blender to purée the soup directly in the pot until smooth and creamy. Alternatively, transfer the soup in batches to a countertop blender and blend until silky.
07 - Stir in the Greek yogurt until fully incorporated and the soup reaches a creamy consistency. Season with salt and black pepper to taste.
08 - Ladle the hot soup into bowls. Top with fresh basil leaves, a swirl of Greek yogurt, and a sprinkle of pumpkin seeds if desired. Serve immediately.