Heat a large skillet over medium heat.

Add butter to the skillet, allowing it to melt.

Mash the banana chunks in a bowl using a fork until it becomes a wet consistency.

Add the egg to the mashed banana.

Whisk the banana and egg mixture until the batter is smooth.

Drop spoonfuls of batter into the hot buttered skillet to make 2 pancakes.

Cook until bubbles form and the edges are dry, about 3 minutes.

Flip the pancakes and cook until browned on the other side, about 2 minutes.

Serve immediately.