1. Heat oven to 350. Spray a 11x7 baking dish with cooking spray. In large bowl, beat egg and milk with whisk until smooth.
2. Separate dough into 8 biscuits, cut each into quarters. Gently stir biscuit pieces into egg mixture to coat evenly. Fold in bacon, cheese and onions. Spoon mixture into sprayed dish; arrange biscuit pieces in single layer.
3. Bake at 350 for 25 to 39 minutes or until golden brown. Cut into squares