Try this Key Lime Cake recipe, or contribute your own.
Cream cheese dictates the financial and structural core of this entire bake. Because dairy carries moisture and fat, buying standard blocks rather than whipped tubs prevents structural failure in the frosting. Standard 8-ounce blocks yield predictable density without excess air whipped into the dairy. Soften the cream cheese at room temperature for precisely 45 minutes before beating to avoid lumps in the final spread.
Scaling this recipe requires attention to the fat-to-liquid ratio in the batter. Doubling the ingredients to fit a half-sheet pan demands extending the bake time past 50 minutes until the center springs back from a light touch. Halving the batch works well in an 8-inch square pan, reducing bake time to roughly 35 minutes at 350 degrees. Keeping extra eggs on hand ensures proper emulsification regardless of batch size.
Key limes remain famously small and dry, yielding barely a teaspoon of juice per fruit. Squeezing four to five limes produces the two tablespoons needed for the glaze, but bottled juice serves as a chemically reliable backup during off-seasons. Fresh juice contains active enzymes that brighten the flavor profile, whereas pasteurized bottled juice offers consistent acidity without bitter pith notes.
Storing the frosted dessert safely means utilizing refrigeration due to the perishable dairy topping. Cover the 9x13 pan tightly with plastic wrap to prevent the exposed graham cracker crust from absorbing refrigerator odors. Consume chilled portions within four days before the moisture compromises the crisp crumb topping.