Line a baking sheet with parchment paper to prevent sticking and ensure easy cleanup. A single layer is ideal for freezing evenly.
In a food processor, combine the ripe bananas, low-fat cottage cheese, melted dark chocolate chips, and vanilla extract. Blend until the texture is completely smooth and creamy.
Pour the mixture onto the lined baking sheet and spread it out in an even layer. Top with sliced strawberries or your choice of favorite toppings.
Place the baking sheet in the freezer for at least 2 hours, or until the bark is firm and fully set.
Once frozen, use a sharp knife to break into chunks. Transfer pieces into an airtight container and store leftovers in the freezer.