Beef Potpie

In a small saucepan, melt butter. Add onion and cook for 1 minute. stir in flour and pepper until blended. Gradually whisk in broth. Bring to a boil; cook and stir for 2 minutes or until thickened. Stir in vegetables and beef; heat through. Transfer to two greased 10-oz. custard cusp.

In a bowl, combine egg and milk. Stir in biscuit mix until smooth. Spoon evenly over meat mixture. Place on an ungreased baking sheet. Bake at 400 degrees F for 25-30 minutes or until bubbly and top is golden brown.