Preheat oven to 350 degrees F.
Melt the butter (in the microwave is fine) and stir in the garlic powder.
Pour butter mixture into the bottom of a 8 to 9-inch round baking pan, tilting it around so that the entire surface is covered.
Sprinkle the dried onion and dried parsley evenly over the butter.
Remove the refrigerator biscuits from the can and cut them into quarters.
Place the cut biscuit pieces evenly over the herb and butter covered pan bottom, trying to not overlap the pieces too much.
Sprinkle the grated Parmesan over the cut biscuits.
Bake in 350 degree F oven until biscuits and Parmesan are golden brown on top, about 20-25 minutes. Move to bottom rack of your oven and cook for an additional 5 minutes to ensure that the bottom of the pullaparts are cooked well.
Source: from Colleen Jo in the LJ Cooking Community. Note from Colleen Jo: “Sometimes, when I'm short on time, I don't cut the biscuits, I just put them in the pan whole. Then they’re called Parmesan Biscuits.”.