Mix well all ingredients. Let sit 10 minutes. Firmly pack dough into a tablespoon, then place on an oiled cookie sheet. Add liquids and blend well. Cool for 15 minutes.
Prick holes all over with fork.
Mix 3 Tbs lime juice and powdered sugar. Drizzle over cake. Cover cake and refrigerate in pan. To serve, cut in squares and top with whipped cream and lime slices. Mix all ingredients and pour into a large casserole dish.