Once fully cooled (and chilled, if you prefer), use a sharp knife to cut the lemon bars into 16 squares or smaller bite-sized pieces. Wipe the knife between cuts for neater edges. Serve directly from the clear glass baking dish so everyone can see the bright yellow filling and golden, crumbly top.
Variations & Tips
For a slightly less sweet bar, use a yellow or white cake mix instead of lemon; you’ll still get plenty of citrus from the pie filling, but with a softer, more buttery flavor. If you prefer a tangier profile, stir 1 to 2 tablespoons of freshly squeezed lemon juice and a bit of finely grated lemon zest into the canned pie filling before spreading it over the crust. To add subtle texture, mix 1/2 cup of unsweetened shredded coconut or finely chopped toasted almonds into the crust-and-topping mixture. For a prettier presentation, dust the cooled bars with powdered sugar just before serving—this is especially nice if you’re bringing them to a holiday table or a bridal shower. If your gatherings run long and you worry about the bars softening, bake them on the longer end of the time range so the top is a touch more golden and the filling a bit firmer; they’ll hold up better on a buffet. Finally, for smaller or more intimate get-togethers, you can halve the recipe and bake it in an 8x8-inch glass dish, checking for doneness a few minutes earlier.
