In a jug, stir the yeast into 300ml of warm water and leave for 5 minutes.
Place the nuts and seeds in a food processor and pulse to roughly chop them. Crack in 2 eggs, then add 1 tsp salt, the flour, cottage cheese and marmite. Pour the yeast mixture and blitz until just combined.
Tip onto a clean work surface and knead for 5 minutes, then cover and leave to proof in a warm area for 1 hour, or until doubled in size.
Divide the dough equally into 12, roll each piece into a long roll-shape and line them up on a large greaseproof-paper-lined tray (you may need to work in batches). Score lengthways down each one, then beat the remaining egg and egg wash each roll. Proof for 1 more hour, or until doubled in size.
You can cover and freeze excess rolls after the second proof and cook straight from the freezer at 190C
Preheat the oven to 190?. Bake the rolls for 20 minutes, or until golden and hollow-sounding when tapped on the bottom. Cool on a wire rack.