Baked Asparagus with Balsamic Butter Sauce

1 bunch fresh asparagus, trimmed
Cooking spray or oil
Salt and pepper to taste
2 Tablespoons butter
1 teaspoon soy sauce
2 Tablespoons balsamic vinegar

Preheat oven to 400 degrees
Arrange Asparagus on baking sheet coat with oil or spray and season with salt and pepper
Bake asparagus in preheated oven for 12 minutes or until tender. (I like my asparagus with a little crunch; if you like them tenderer you may want to cook for a little longer)
Melt butter in saucepan over medium heat, remove from heat and stir in soy sauce and balsamic vinegar.
Pour over the asparagus and serve.