Heat oven to 450. Combine Bisquick with 4 Tablespoons butter using a pastry cutter or a large fork. Add milk, and cheddar cheese. Stir together. Spoon onto an ungreased cookie sheet. Bake for 8-10 minutes. In a small sauce pan combine 2 Tablespoons butter, garlic powder and old bay seasoning. Heat until butter is melted. Spoon butter mixture over hot biscuits. Eat em' up! They are YUMMY!