- flavorsofitaly
Onion Tart is the kind of rustic savory tart that earns its place at the table without any fuss. Blonde onions cook slowly in a pan until they turn genuinely sweet, then get layered into a crunchy puff pastry shell with gorgonzola piccante, scamorza, and parmigiano. The mellow onions pulling against three assertive cheeses is what makes the filling work, and sage woven through the whole thing adds just enough herbal lift to keep it from turning heavy. Simple ingredients, straightforward to put together, and ready without spending much time at the stove—this savory onion tart holds up equally well as a starter, the centerpiece of a casual buffet, or a satisfying meal on its own.
The pastry crisps firm on the outside while the filling stays soft and yielding at the center. That contrast in texture is part of what makes it so appealing slice after slice. Serve it warm, cut into generous wedges, and it suits an aperitivo spread just as comfortably as an informal weeknight dinner. The sharpness of the gorgonzola piccante is the key flavor note here—it keeps the sweetness of the onions in check and gives the whole tart a depth that milder cheeses simply wouldn't deliver.
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To prepare the onion tart, first peel the yellow onions and cut them into julienne strips 1. Melt the butter in a saucepan 2, then add the sliced onions 3.
Salt 4 and stir well so the onions on the bottom of the pan don't burn 5. Cook over medium-low heat for about 30-40 minutes, or until they have softened 6.
Once cooked and lukewarm, season the onions with a grind of black pepper 7 and the chopped sage 8. Grate the scamorza cheese 9.
Now unroll the puff pastry into a tart pan with a diameter of 34 cm (9.5 in) and spread the grated scamorza over the base 10, then fill with the cooked onions 11 and the spicy gorgonzola cut into small cubes 12.
Sprinkle the surface with grated Parmigiano Reggiano 13 and fold the pastry inward to create the edge 14. Bake in a static oven at 392°F for 30 minutes until golden. Once out of the oven and slightly cooled, your onion tart will be ready to enjoy 15!