Using a blender or a food processor, pulse the biscuits until powdery and fine. Alternatively, you may use a large ziplock bag and a rolling pin to grind the biscuits. Set aside in a bowl.

In a small saucepan, melt the butter and brown sugar. Add the molasses, vanilla, and cinnamon once the butter has melted and the sugar has dissolved.

Add the evaporated milk. Whisk constantly in low heat until well combined. Remove from heat.

Carefully pour a quarter of the milk mixture over the powdered biscuits. Mix well using a spatula. Add more of the milk mixture to achieve your desired consistency.

Optional: Pulse the mixture for a minute or two in the food processor or blender until creamy. Add a few tablespoons of the milk mixture as necessary.