炒め物（舞茸のバター醬油ステーキ）｜けんますクッキングさんのレシピ書き起こし

Slice the onions thinly.
Cut the bacon into 5mm wide pieces.

Add bacon and onion to a frying pan and fry with butter.
Add the whole Maitake mushroom to it without cutting it.
Season with salt and pepper.

2. Cover with a lid and steam-fry over medium-low heat.
Halfway through cooking, open the lid and flip the mushrooms over.
Place the bacon and onions on top of the mushrooms, then cover again and steam-fry for about 2 minutes.
Remove the lid and cook until the mushrooms are browned.

Sprinkle soy sauce onto 3.
Arrange on a plate and garnish with grain mustard if you like.