How to Make It
Preheat broiler to HIGH; arrange rack about 4 inches from heating element.
Arrange asparagus on a foil-lined baking sheet. Coat asparagus with cooking spray.
Broil asparagus 10 minutes, stirring once.
Cook bacon in a skillet over medium heat. Remove from pan; crumble. Add shallots; cook 30 seconds. Add chicken stock, vinegar, mustard, and maple syrup; cook 1 minute. Drizzle over asparagus. Sprinkle with salt and crumbled bacon.