Preheat oven to 400degrees. Cut Brie horizontally in half. Sprinkle bottom half with blue cheese; replace top., On a lightly floured surface, roll pastry into a 14-in. square. Trim corners to make a circle. Spoon jam onto center of pastry; sprinkle with almonds. Top with Brie., Lightly brush edges of pastry with beaten egg. Fold pastry over cheese, pinching edges to seal; trim excess pastry as desired., Transfer to an ungreased baking sheet, seam side down. Brush pastry with beaten egg. Bake until golden brown, 20-25 minutes., Immediately remove from pan to a serving plate; let stand 45 minutes before serving. Serve with crackers.