Peanut Butter Chocolate Poke Cake. Bake for 30-35 minutes, or until cake tests done. Poke holes all over cake with a straw. Transfer cake batter to a prepared baking pan. Cool, and invert (turn over) cake onto a tray large enough to hold the cake. Try these easy cakes for yourself! When cooled, poke holes throughout cake using a chopstick or fork (chopsticks better). 1 / 15. To make the topping: Dissolve the jello powder completely in boiling water, with the sugar, then add in the COLD water; mix well. THE BEST 7-UP CAKE. Put in refrigerator to cool and set for 4 hours. When my family is planning a get-together, I can count on three or four people asking if I’m bringing this chocolate peanut butter poke cake. These poke cake recipes are extra moist and delicious thanks to additions like coffee, caramel and even a bit of rum. The Best 7-Up Cake is a moist lemon cake that is made with a jazzed up boxed cake mix and topped with a delicious lemon icing drizzle. Mix jello powder with 1 and 1/4 cups of 7-up soda. Recently I shared my recipe for DOUBLE FUDGE COCA-COLA CAKE and then I realized, I couldn’t share the Coca-Cola Cake without also sharing the 7-Up Cake. Pour mixture evenly over top of cake allowing it to "soak" through the holes you made. Spread cool whip over top and serve cool.