Preheat the Oven: Set your oven temperature to 375°F (190°C) and lightly coat an 8x8-inch baking dish with cooking spray or a thin layer of oil to prevent sticking.
Mix the Wet Ingredients: In a spacious mixing bowl, combine the mashed bananas, creamy peanut butter, honey (or maple syrup), almond milk, eggs, and vanilla extract. Use a whisk or fork to blend until the mixture is smooth and well incorporated.
Combine with Dry Ingredients: Gradually add the rolled oats, baking powder, ground cinnamon, and a pinch of salt to the wet mixture. Stir everything together until fully integrated. If you’re including nuts, gently fold them into the mixture at this stage.
Transfer to Baking Dish: Carefully pour the oatmeal batter into the greased baking dish, ensuring it is spread out evenly for consistent baking.
Add Final Touches: Top the surface with banana slices and dollops of peanut butter, arranging them artistically for visual appeal and extra flavor.
Bake: Place the dish in the preheated oven and bake for 25-30 minutes. It's ready when the top is beautifully golden brown and the center feels firm to the touch.
Cool and Serve: After baking, remove the dish from the oven and allow it to cool for a few minutes. Cut into squares for serving.
Notes
Serve warm with extra toppings for enhanced flavor.