Mix all potato ingredients until combined.
Use an ice cream scoop to form balls out of the mashed potatoes. Roll each ball in the crumb mixture and then press down a little to flatten. Make a deep indentation in the center of each potato ball and fill with the fried shallots (wearing plastic gloves for this step is advisable).
Heat oil for crumb mixture in a pot over medium heat. Add crumbs, salt, and garlic powder and stir frequently until golden brown. Remove from heat.