Toast the sourdough bread in a toaster or place it on a grill.
Continue toasting until the bread becomes crisp and evenly golden brown, creating a sturdy base for the toppings.
Remove the toasted sourdough and allow it to cool briefly.
Cover the warm bread with a generous, even layer of cottage cheese.
Arrange the fresh blueberries across the cottage cheese, distributing them evenly so each bite contains fruit.
Scatter the finely chopped pistachios over the blueberries to provide a delicate crunch and nutty finish.
Serve the cottage cheese blueberry toast immediately while the bread remains crisp.