Preheat oven to 375. Spray muffin pan with cooking spray and set aside.
In bowl, stir together chives, caraway seeds, flour, baking powder, and salt.
In another bowl, add mashed potato, grated potato, egg, egg white, oil, and milk and stir until well combined.
Add dry ingredients to wet ingredients and stir to combine.
Lightly flour a work surface. Turn dough onto floured work surface and knead several times.
Divide dough into 12 balls. Place dough balls in muffin tin. Cut an "X" on top of each ball of dough with a knife.
Bake 30 minutes, until golden and sound hollow when tapped on. Cool on wire rack.
These rolls are best served warm with butter!