Allow the brownies to cool completely at room temperature for about 1 hour so the frosting can set into its signature soft, fudge-like finish before slicing into neat squares.
Pro Tips for the Perfect Cafeteria Cut
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Chill for Clean Lines: Pop the pan into the refrigerator for 20 minutes right before cutting. Wipe the knife clean with a hot towel between slices for razor-sharp edges.
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Warm Serving Secret: Serve at room temperature or slightly warmed alongside a cold glass of milk for the full school-lunch nostalgia experience
