Halve the avocados and remove the pit. Carefully scoop the flesh all in one piece out of the skin.
Sprinkle the avocado halves with a little lime juice. Spoon some hummus into the hollow where the pit was.
Cut the radishes into slices and place them on each half of the avocados. Decorate each 3 of the avocado halves with different toppings: sesame seeds, paprika, and cress so you wind up with various textures. To finish off, garnish with a couple of coriander sprigs.
Serve avocado halves straight away. Also delicious with flatbread or crackers.