In a medium saucepan, whisk together almond milk, mashed bananas, protein powder, cornstarch, erythritol, vanilla extract, and salt until smooth.

Place the saucepan over medium heat, stirring constantly until the mixture thickens and bubbles, about 5–7 minutes.

Reduce heat to low, continue to stir for an additional 2–3 minutes until velvety.

Remove from heat, pour the mixture into serving dishes, and let it settle.

Allow to cool at room temperature for about 10 minutes, then refrigerate for at least 1 hour.

Before serving, add your choice of sliced bananas, crushed graham crackers, or whipped cream as toppings.