Clean the mushrooms well and pat dry with paper towel after cutting them open.

Boil water in a pan and drop the cleaned mushrooms into the boiling water for 10 minutes.

After 10 minutes, remove the mushrooms from the boiling water and allow to cool.

Once cooled, carefully peel away the skin from the mushroom caps and discard the stems.

Add butter to a skillet and melt over medium heat. Add sliced mushrooms and stir frequently for 5 minutes.

Season with salt and pepper to taste and serve warm.