Prepare some browned butter. Mix the icing sugar, salt, ground almonds, flour and orange zests. Add the honey, still warm browned butter, then the egg whites.
Fill the savarin (ring-shaped) silicon moulds. Bake at 200°C (392°F) for about 8 min.
Cut the oranges into 2-mm slices, arrange in an ovenproof dish, pour on the syrup. Cover with greaseproof paper. Bake at 120°C (248°F) until crystallised.
Mix the eggs, yolks, sugar, orange zests*, juices and vanilla. Heat over a bain-marie, constantly stirring. Cook to 85°C (185°F).
Add the gelatine. Allow to cool and when the temperature drops to 40°C (104°F), add the butter and mix. Pour into a semi-spherical silicon mould.
*3 pieces
Place 3 half-slices of candied orange into the hollow of the sponge. Place a half-sphere of the orange cream in the centre, then a few half-pistachio nuts on the cream.