Preheat oven to 350 degrees. Spray a 11 x 7 or 12 x 8 glass baking dish with cooking spray. In a large bowl, beat egg and milk with a wire whisk until smooth. Separate dough into individual biscuits and cut each biscuit into quarters. Gently stir biscuit pieces into egg mixture to coat evenly. Fold in ham, cheese, onions and granulated garlic. Spoon mixture into prepared dish, arrange biscuit pieces in a single layer. Baked at 350 for 23 - 25 minutes or until golden brown. You can either cut into squares or just pull apart and serve.