Preheat the Oven: Preheat your oven to 350°F (175°C). Grease or line a square baking pan with parchment paper.

Make the Brownie Batter:

In a mixing bowl, whisk together the dry ingredients: flour, cocoa powder, baking powder, and sugar. In a separate bowl, combine the wet ingredients: melted butter, milk, and chocolate chips. Stir the wet ingredients into the dry mix until smooth. Pour the batter into the prepared pan.

Bake the Brownie Base: Bake for 18–20 minutes or until the top is set but the center is slightly underdone.

Prepare the Banana Pudding:

While the brownie is baking, prepare the banana pudding by heating the coconut milk and mashed bananas over medium heat. Stir in cornstarch and sweetener until the mixture thickens. Remove from heat and stir in vanilla extract.

Layer the Pudding:

Once the brownie base is slightly baked, remove it from the oven. Spread the banana pudding evenly over the brownie layer. Press vegan vanilla wafers into the pudding layer and add banana slices if desired. Return to the oven for another 10 minutes.

Cool and Set:

Let the dessert cool at room temperature, then refrigerate for 2–3 hours to set the pudding layer.

Serve:

Slice into squares and top with vegan whipped cream or extra banana slices.