Asparagus with Balsamic butter sauce

1 bunch fresh asparagus
cooking spray
salt and pepper to taste
2 T. butter
1 T. soy sauce
1 t. Balsamic vinegar

Snap ends off of washed asparagus.
Melt the butter in a skillet adding in soy sauce and Balsamic vinegar.
Add asparagus and let simmer for about 15-20 minutes or until desired tenderness.