Preheat your oven to 200 degrees Celsius.
Wash 2 large sweet potatoes thoroughly and pat them dry.
Pierce the sweet potatoes with a fork multiple times to allow steam to escape while baking.
Place the sweet potatoes on a baking sheet and bake for about 40-45 minutes, or until they are soft and fully cooked.
Remove the sweet potatoes from the oven and let them cool for a few minutes.
Cut the sweet potatoes in half and scoop out the flesh into a bowl.
Use a blender or food processor to puree the sweet potato flesh until it is smooth.
If the puree is too thick, add a little water or milk to achieve the desired consistency.
The sweet potato puree is now ready to be used in your recipes, or it can be stored in the refrigerator for up to a week.