Place the cottage cheese in a small blender and process until completely smooth and creamy.
In a mixing bowl, combine the smooth cottage cheese, Greek yogurt, peanut flour, maple syrup, vanilla extract, and sea salt, whisking until the mixture is light and aerated.
Break the brown rice cakes by hand into small, half-inch pieces.
In a glass jar or airtight container, create a base layer using one-third of the rice cake pieces.
Spread one-third of the peanut butter yogurt mixture over the rice cakes, smoothing it to the edges.
Repeat the layering process two more times, finishing with the remaining yogurt mixture on top.
Sprinkle the chia seeds evenly over the top and use a fine-mesh sieve to dust the cacao powder across the surface.
Seal the container and refrigerate for at least 4 hours, or preferably overnight, to allow the rice cakes to absorb moisture and achieve a cake-like texture.