Can I make the cake and breadsticks ahead of time?
Yes. Bake the cake layers 1–2 days ahead and store covered at room temperature; assemble with filling and frosting on serving day. Breadsticks can be shaped and frozen up to 3 days before baking.
What can I use instead of fresh raspberries?
Frozen raspberries work well; thaw and drain excess liquid before cooking down for the filling. Frozen berry yield is slightly higher water content, so reduce water in the slurry by 1 tablespoon.
How do I know when the cake is done baking?
Insert a toothpick into the center—it should come out with a few moist crumbs, not wet batter. Cake layers typically bake 30–35 minutes at the stated temperature.
Can I substitute the lemon basil pasta?
Fresh basil is key to the flavor; dried basil loses brightness. Use flat-leaf parsley if basil is unavailable, and increase lemon zest to compensate for reduced herb intensity.
How should I store leftovers?
Refrigerate cooled cake covered for up to 3 days. Leftover pasta is best eaten fresh but keeps covered in the fridge for 1 day. Breadsticks stay fresh in an airtight container for 2 days.