Place sweet potatoes in a small saucepan and cover with water. Bring the water to a boil over medium-high heat. Boil for 5 to 8 minutes or until the potatoes are tender. Drain well and cool completely.
Place the sweet potatoes in a food processor with the evaporated milk, egg whites, sugar, brown sugar, cinnamon, nutmeg, and cloves. Pulse until smooth and creamy.
Roll out pie crust and cut into small rounds with a biscuit cutter. Press each dough circle into the muffin tin.
Scoop even portions of the sweet potato mixture into the pie shells being careful not to overfill. Tap the muffin tin against the counter to settle the pie filling.
Bake for 10 (tart pan) to 15 minutes (muffin tin) or until a toothpick inserted returns clean.
Cool completely in the pan. Use a spoon or dull knife to remove the mini pies.