Bring a large pot of salted water to a boil. Add the potatoes and cook for about 15 minutes, or until they are fork-tender.
Drain the potatoes and return them to the pot. Add the butter, buttermilk, garlic powder, onion powder, salt, and pepper. Using a potato masher, mash the potatoes until they are the desired consistency.
Transfer the potatoes to a serving dish and serve hot.
Interesting Facts
This dish is a great way to use up leftover buttermilk.
You can also add grated cheese, bacon bits, or chives to the potatoes for extra flavor.
This dish is a great vegan and vegetarian option as it is dairy-free.