In a cast-iron skillet (or other heavy duty pan), pre-cook the apples in butter until slightly softened for a few minutes.
This helps to make sure the apples in the fritters are cooked through.
Heat a quart of neutral oil in the same cast-iron skillet until it reaches 360ºF (182ºC).
Use a large cookie scoop to scoop and drop the fritter batter into the oil.