Drain the soaked butter beans and rinse them under cold water.

In a large pot, heat the olive oil over medium heat.

Add the chopped onion and sauté until translucent, about 5 minutes.

Stir in the minced garlic and cook for an additional minute until fragrant.

Add the drained butter beans and water to the pot.

Bring to a boil, then reduce heat to low and simmer for about 30 minutes, or until the beans are tender.

Season with salt, black pepper, and thyme. Stir well and cook for another 5 minutes.

Remove from heat and let cool slightly before serving.