In a blender, combine the cottage cheese, cocoa powder, maple/honey, vanilla, espresso powder (if using), and a pinch of sea salt. Blend until completely smooth. It's going to be the consistency of a melted chocolate shake.Drizzle in 1/2 cup of the peanut butter, pulse to swirl, don't fully combine. Then, pour the ice cream into a 9x5 inch loaf pan, drizzle over the remaining peanut butter as desired. Use a knife to swirl it through the ice cream. Freeze for 2 hours, or until ready to enjoy. Let the ice cream sit at room temperature for 10-15 minutes, then scoop and enjoy!