Preheat the Oven: Initiate by setting the oven to 400 degrees Fahrenheit to ensure it reaches the correct temperature for baking.
Prepare the Dough: Remove the biscuits from the package. Separate and divide each biscuit in half. Utilize a rolling pin or your hands to flatten each piece to approximately a quarter inch in thickness, aiming to maintain a rounded shape.
Combine the Seasonings: In a small mixing bowl, amalgamate the melted butter, minced garlic, chopped parsley, and salt. This mixture will be used for flavoring and as a glaze for the biscuits.
Assemble the Biscuits: Take two pieces of the sliced mozzarella cheese and place them at the center of each flattened biscuit dough piece. Carefully fold the dough over the cheese, pressing the edges together to seal and form a sealed ball. Ensure the seam is positioned downward when placing the dough balls on a baking sheet, preferably one that is light in color to prevent the bottoms from overcooking.
Bake: Generously apply the garlic butter mixture to each dough ball using a pastry brush. Transfer the baking sheet to the oven and bake for 8 to 10 minutes, or until the biscuits are golden brown on top.
Final Glaze and Serve: Upon removal from the oven, immediately brush the biscuits with the remaining garlic butter mixture for added flavor and sheen. Serve while warm to enjoy the gooey mozzarella filling at its best.