Possible Clues:

• Open filled pastry
• Patisserie selection
• With 67-Across, dessert on the menu at 17-Across that made the Custard Run in less than 12 pastries?
• Open pastry filled with savouries, fruit or custard
• Custard treat
• Dessert often baked in a ramekin
• Custardlike dessert
• Dessert also called creme caramel
• Taqueria dessert, maybe
• Manx side filled case