Preheat your oven to 375°F. Line a baking sheet with parchment paper.
Arrange the jalapeño halves on the prepared baking sheet, cut side up. If the jalapeños have trouble standing, you can slice a small portion off the bottom to create a flat surface.
Place a slice of brie cheese into each jalapeño half. Spoon a small amount of cranberry sauce over the brie. In a small bowl, mix the gluten-free breadcrumbs with the olive oil, salt, and pepper until the breadcrumbs are evenly coated with the oil. Sprinkle the seasoned breadcrumbs over the cranberry sauce on each jalapeño half.
Bake in the preheated oven for 15 minutes, or until the breadcrumbs are golden and the cheese is melted and bubbly. Let the jalapeño poppers cool for a few minutes before serving.
Tip:
For a smoother cranberry sauce topping, you can briefly process the cranberry sauce in a blender or food processor. For an added touch of freshness, garnish the poppers with a sprinkle of chopped fresh cilantro or parsley after baking.