In a pot, combine the chicken bouillon cube and water.
Bring this to a gentle boil until the bouillon cube fully dissolves.
Add the baby lima beans to the pot.
Stir in the minced garlic, onion powder, Cajun seasoning, sugar, and black pepper.
Bring the mixture to a simmer over medium heat.
Cover the pot and let it cook for about 20 minutes, stirring occasionally.
Uncover the pot and add the butter.
Stir well until the butter melts into the mixture, enhancing the beans' rich flavor.
Check the tenderness of the beans by tasting.
If they are tender and flavorful, they're ready to serve!