Wash and chop potatoes into bite sized chunks. Boil in water on the stove-top until tender. Depending on the number of potatoes, this could take 15-30 minutes. I like to get them off the stove when they are fork tender, but not soft. Drain the potatoes and put them back into the hot pot.
Place the pot back on the stove over the lowest heat setting. Smash the potatoes with a handheld potato masher and add the butter. Continue crushing the potatoes until they are as smooth as you like. If the potatoes are dry, you can add a splash of milk or cream. Stir in the salt, garlic and pepper. Taste and adjust the seasonings.
Top the hot potatoes with the additional two tablespoons of butter right before serving. Enjoy!