Air fryer 180°C for 20 minutes
Wash the sweet potatoes thoroughly, peel them, and boil them.
Mash the boiled sweet potatoes and let them cool.
Add yogurt to the mashed sweet potatoes and mix well.
Place biscuits on the bottom of the icebox mold.
Spread the sweet potato yogurt mixture over the biscuits.
Repeat this layering process several times.
For the final layer, spread the yogurt mixture and smooth it out.
Let it set in the refrigerator for at least 2 hours before serving.