Bring a pan of water to a simmer. Add 2 eggs, simmer for 2 mins if room temp, 3 mins if fridge-cold, then turn off heat. Cover the pan and leave for 2 mins more.
Meanwhile, toast 4 slices wholemeal bread and spread thinly with butter, then Marmite. To serve, cut into soldiers and dip into the egg, then a few mixed seeds.