Match sizes: Use the same scoop for every cookie so sandwiches stack neatly.
Chill briefly: A short chill firms the dough for cleaner edges and less spread.
Cool completely: Fill only once cookies are cool to keep buttercream stable.
Light hand with caramel: Drizzle sparingly so it doesn’t squeeze out when you bite.
Pipe for precision: A piping bag gives tidy edges and even layers.
Watch for doneness: Pull cookies out when edges set and centers look soft, for a tender bite.
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