How can you prevent soggy bottoms when filling baked pastries with juicy fillings?

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Soggy bottoms come from moisture in the juicy filling soaking into the crust, so the winning approach is to build a moisture barrier and set the crust first. Pre-thickening the filling with starch lets the juices gel, reducing how much liquid escapes during baking. Blind baking the shell—lining with parchment and weights and baking until the crust is firm—gives the bottom a crisp, cooked base so it’s less likely to absorb moisture. Sealing the crust with a thin glaze or jam adds a moisture barrier between filling and crust, further preventing liquid from seeping into the dough.

Together, these steps keep the bottom crisp even with juicy fillings. The other options don’t address moisture transfer: baking longer at higher heat can cause browning or burning, extra sugar doesn’t stop liquid migration, and frozen dough doesn’t reliably prevent sogginess.