For an elevated sweet–tangy flavor, warm the blueberry preserves with a tiny splash of balsamic vinegar. The acidity brightens the berries and balances the richness of the brie beautifully, creating a more complex, gourmet finish.
Serving & Make-Ahead Notes
These poppers are best served fresh, but they can be assembled a few hours ahead of time and kept covered in the refrigerator until ready to cook. This makes them a convenient option for entertaining.
If you have leftovers, store them in an airtight container in the refrigerator for up to 2 days. Reheat briefly in the oven or air fryer to restore some crispness, though the texture is at its best when freshly made.