Mashed sweet potatoes make an excellent side dish for just about any meal. You can put fried eggs on top of them, eat them alongside a steak, or pair them up with pork. They also reheat easily.
If you like your mashed sweet potatoes to be a little more “whipped,” you can add in a small amount of coconut milk or almond milk. I suggest just dribbling it in and not worrying about a specific measurement as it can be easy to overdo (and impossible to undo) and the amount depends too much on personal preference and the texture of the potatoes you have.
For fun, you can experiment with adding other spices to your mashed sweet potatoes. Try any one or more of these ideas: