Carefully unroll the phyllo dough and lay it flat. Place a damp cloth over the sheets to keep them moist.
Take one sheet of phyllo dough, brush it with melted butter, and layer a second sheet on top. Repeat this for a total of 4 layers.
Cut the layered phyllo into 3-inch squares and carefully press each square into a mini muffin tin to form a cup shape. Repeat with the remaining phyllo dough.
Bake the phyllo cups in the preheated oven for about 10 minutes or until golden brown and crispy. Remove from the oven and allow them to cool slightly.
In a mixing bowl, combine the brie cheese cubes, cranberry sauce, chopped parsley, chopped walnuts (if using), garlic powder, and black pepper. Mix gently until well combined.
Spoon the cranberry-brie mixture into each baked phyllo cup, filling them generously.
Return the filled phyllo cups to the oven and bake for an additional 5-7 minutes, until the brie is melted and bubbly.
Remove from the oven and allow them to cool for a few minutes before serving.
Notes
Arrange the phyllo cups on a serving platter and garnish with a sprinkle of extra parsley for a festive touch. Serve warm as an elegant appetizer for any gathering!