Liver and Onions

Step 1
Melt 3 tablespoons butter in a medium skillet over medium heat. Add onion and saut? until soft, about 5 minutes. Stir in sugar, reduce the heat to low, and continue to cook and stir until onion is very tender and brown, about 25 to 30 minutes; transfer onions into a small bowl and reserve skillet.

Step 2
While the onions are cooking, rinse liver and remove the thin outer membrane. Slice liver into 1/4- to 1/2-inch-thick slices. Dredge in flour.

Step 3
Heat remaining 1 tablespoon butter in the same skillet over medium heat. Add liver and cook until browned, 1 to 1 1/2 minutes per side.

Step 4
Serve liver smothered with caramelized onions.