• Thaw your puff pastry and preheat your oven to 400 degrees.
• Spray a 24 cup muffin pan and put your brie in the freezer until it's firm to the touch.
• On your floured surface, roll the sheet of puff pastry into 10x15-inch rectangles.
• Cut your pastry into 4 strips lengthwise.
• Then, cut the pastry crosswise into 6 strips, creating 24 squares.
• Press the pastry squares into each cup of the muffin pan, letting the excess stick up over the edges.

Put It Together

• Cut your brie into 24 slices.
• Place a piece in the center of each pastry square.
• Top each with roughly 1 teaspoon of cranberry sauce, then sprinkle with chopped pistachios.
• Bake for about 15 minutes or until the puff pastry is golden brown on the edges and the cheese is bubbly.
• Let cool in the pan for 5 minutes.
• Remove the bites from the pan and garnish with sea salt and pepper, if you want to lean more savory.