Preheat your oven to 375°F. Grease a baking sheet or line it with parchment paper.
In a small saucepan, melt the butter over medium heat. Add the minced garlic and sauté for about 1 minute until fragrant. Remove from heat and stir in the parsley, salt, black pepper, and red pepper flakes if using.
Open the biscuit dough and separate it into individual biscuits. Flatten each biscuit slightly in your hand and place about 1 tablespoon of mozzarella cheese in the center. Fold the edges of the biscuit over the cheese and pinch to seal, forming a ball.
Place the cheese-filled biscuit balls on the prepared baking sheet. Brush the garlic butter mixture generously over each ball, making sure to reserve some for later.
Sprinkle the grated Parmesan cheese over the top of the biscuit balls.
Bake in the preheated oven for 15-20 minutes, or until golden brown. Halfway through baking, brush the remaining garlic butter over the tops for extra flavor.
Remove from the oven and let cool for a few minutes before serving. Enjoy warm.
Notes
For a spicy kick, add jalapeño slices or diced green chilies to the cheese filling.
Try using different types of cheese, such as cheddar or pepper jack, for a unique flavor twist.