01 -
In a large pot or Dutch oven set over medium heat, cook diced bacon until almost crisp.
02 -
Add finely chopped onion and cook for 5 minutes, stirring often, until translucent.
03 -
Reduce the heat to low, stir in minced garlic, and cook for 30 seconds until fragrant.
04 -
With a slotted spoon, transfer the bacon and onions to a bowl, reserving bacon drippings in the pot.
05 -
Place the trimmed green beans in the pot and pour in enough chicken broth to cover. Add Cajun seasoning if desired.
06 -
Bring the mixture to a gentle boil, then reduce heat to low. Cover and simmer for 60 to 90 minutes, stirring occasionally, until beans are tender.
07 -
Drain most of the broth and return reserved bacon and onions to the pot. Cook for 1 to 2 minutes until heated through.
08 -
Stir in unsalted butter until melted and fully incorporated.
09 -
Adjust seasoning with salt and black pepper to taste. Serve warm.