Follow these simple steps to create your own Bananas Foster Poke Cake:

1. Preheat oven: Preheat your oven to 350°F (175°C). Grease a 9×13 inch baking pan.

2. Prepare cake batter: In a large bowl, mix the yellow cake mix, water, vegetable oil, and eggs. Stir until combined, but do not overmix.

3. Add mashed bananas: Fold in the mashed bananas gently until they are evenly distributed in the batter.

4. Bake the cake: Pour the batter into the prepared baking pan. Bake for 25-30 minutes or until a toothpick inserted in the center comes out clean.

5. Cool the cake: Remove from the oven and let the cake cool in the pan for about 15-20 minutes.

6. Make the sauce: In a saucepan, combine brown sugar, butter, heavy cream, and dark rum. Cook over medium heat until the mixture is smooth and bubbly.

7. Poke the cake: Once the cake has cooled slightly, use the end of a wooden spoon to poke holes all over the top, about 1 inch apart.

8. Pour sauce: Carefully pour the warm sauce over the cake, making sure it seeps into the holes.

9. Let it soak: Allow the cake to soak for at least 30 minutes, or preferably, refrigerate for several hours to enhance imbuement.

10. Serve: Top with whipped cream and garnish with sliced bananas just before serving.

These straightforward steps ensure that anyone can create this delectable dessert with confidence!