Banana Pudding Bundt Cake. 1 box yellow cake mix, 1 box instant banana pudding mix, 4 eggs, 1 c water, 1/4 c oil, 3/4 c mashed bananas. Bake in greased Bundt cake pan at 350* for 50-55 minutes. Cool in pan 10 minutes. Turn out onto wire rack and cool completely. Make glaze and drizzle over cake in zig-zag motion.