Roll puff pastry into a 14-in. square. Spread jam into a 4-1/2-in. circle in center of pastry; place cheese over jam. Fold pastry around cheese; trim excess dough. Pinch edges to seal. Place seam side down on ungreased baking sheet. Beat egg and water; brush over pastry.
Cut the trimmed pastry pieces into decorative shapes and place on top; brush with egg mixture if desired. Bake at 400° for 20-25 minutes or until puffed and golden brown. Serve warm with apple slices.
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