To make this clone easy I've designed the recipe with white cake mix. I picked Betty Crocker brand, but any white cake mix you find will do. Just know that each brand (Duncan Hines, Pillsbury, etc.) requires slightly different measurements of additional ingredients (oil, eggs). Follow the directions on the box for mixing the batter, then pour it into 2 greased 9-inch cake pans and bake until done. The filling recipe is a no-brainer and the crumb topping is quick. When your Olive Garden lemon cream cake recipe is assembled, stick it in the fridge for a few hours, and soon you'll be ready to serve 12 slices of the hacked signature dessert.