Preheat oven to 400° F.
Combine first three ingredients in a large bowl, and stir well. Gradually add water, Worcestershire sauce, and broth, stirring with a whisk until blended; set aside.
Cook beef and onion in a large saucepan coated with cooking spray over medium-high heat until browned, stirring to crumble. Drain well; return meat mixture to pan. Add parsley and next 5 ingredients; stir well. Add broth mixture; cook over medium heat 15 minutes or until thick, stirring constantly.
Spoon mixture into a 13x9-inch baking dish coated with cooking spray. Carefully split uncooked biscuits in half horizontally; place biscuit halves over meat mixture. Bake at 400° F for 10 minutes or until biscuits are lightly browned.Servings: 4