If you're making tiramisu and don't have ladyfingers on hand, there are a few substitutes that you can use. One option is to use sponge cake. Sponge cake is similar to ladyfingers in terms of texture and flavor. You can cut it into pieces that are the same size as ladyfingers and use it in the same way. Another option is to use pound cake. Pound cake is a denser cake, but it will still work as a substitute for ladyfingers. Simply cut it into pieces and layer it in the same way as you would with ladyfingers. If you want a lighter cake option, you can try using angel food cake. Angel food cake is a very light and airy cake that is similar to ladyfingers. It's a good option if you want to keep the light and airy texture of tiramisu. Finally, you can use vanilla wafers are we did in this recipe! Ultimately, it's up to you what type of cake you want to use in tiramisu. If you don't have ladyfingers, any of these substitutes will work. Just be sure to adjust the amount of sugar and other ingredients to compensate for the different cake.