01 -
Rinse green beans thoroughly, trim ends, and remove any tough strings.
02 -
Place trimmed green beans into the slow cooker. Add vegetable broth, then sprinkle taco seasoning, smoked paprika, cumin, onion powder, black pepper, brown sugar, and minced garlic evenly over the beans. Add lemon zest and lemon juice.
03 -
Dot the butter over the green beans, then toss thoroughly with tongs or clean hands to coat evenly with broth, butter, and seasonings.
04 -
Cover and cook on LOW for 4 to 5 hours or on HIGH for 2 to 2.5 hours, until beans are tender but still retain firmness. Toss once or twice during cooking for even flavor distribution.
05 -
Give the beans a final toss, adjust seasoning if needed, and serve hot garnished with reserved lemon zest for a fresh touch.