Cut the pumpkin into oblong, boat-shaped slices about 2 cm thick. Remove salt and bones from the sardines or anchovies.
Make a marinade with oil, sugar, salt, pepper and vinegar and cover the bottom of a fireproof dish.
Spread the pumpkin boats evenly in the mold and top each with an anchovy. All together Fifteen min in the 180 ° C hot stove mold.
Remove from the heat and serve lukewarm.