01 -
Slice onions into rings and season all-purpose flour with salt and pepper on a wide plate. Rinse beef liver slices under cold water and pat dry thoroughly.
02 -
Place liver slices in a shallow dish in a single layer and pour milk over to cover completely. Let soak for at least 15 minutes to mellow flavor and tenderize.
03 -
Melt half the butter in a large skillet over medium heat. Add onion rings, stirring gently every minute until translucent and golden brown, approximately 3 to 5 minutes. Remove onions from skillet and set aside.
04 -
Drain milk from liver slices. Press each slice evenly into seasoned flour, shaking off excess to ensure a light coating.
05 -
Add remaining butter to skillet and increase heat to medium-high. Arrange liver slices in a single layer without overlap. Cook undisturbed for 3 to 4 minutes until the undersides are golden. Flip once and cook the other side until edges are cooked but centers remain slightly pink.
06 -
Return caramelized onions to skillet, distributing evenly over liver. Reduce heat to medium and heat together for 1 to 2 minutes until onions are warm and their juices mingle with the liver. Optionally cook longer for firmer liver.
07 -
Plate liver slices topped with buttery caramelized onions immediately while hot. Recommended accompaniments include creamy mashed potatoes or crusty bread to absorb flavorful juices.