Line a shallow 23 cm x 33 cm (9 x 13 inch) baking tray with non-stick baking paper.
Combine the seeds and pepitas in a bowl.
Add warm water, salt and pepper and stir well to combine. Set aside for 30 minutes, stirring halfway through, until the water has been absorbed.
Meanwhile, preheat your oven to 140 Degrees C (285 F).
Spoon the mixture onto the prepared tray. Using an offset spatula or the back of a large spoon, spread the mixture to fit the whole tray.
Bake for approximately 60-70 minutes or until the cracker mixture has dried on the top and bottom and is golden and crisp.
Cool on the tray, and then break into approximately 20 pieces.
