Mondare e pelare le cipolle in una ciotola colma di acqua, quindi tagliarle a fettine sottili.
Sciacquare le fettine passandole in un’altra ciotola colma di acqua frizzante, sgocciolarle e tamponarle con della carta da cucina.
Trasferire le cipolle in una casseruola con il burro e qualche mestolo di brodo, lasciandola quindi stufare dolcemente, fino a quando risulteranno traslucide.
Intanto, in un padellino a parte, tostare 1 cucchiaio di farina mescolando con un cucchiaio di legno fino a ottenere un colore marroncino.
A questo punto, aggiungere la farina alle cipolle, coprire con il brodo, salare, pepare e cuocere il tutto lentamente per 20 minuti.
Intanto, pulire gli champignon con un panno umido, tagliarli a fettine e condirli con sale, pepe e olio extravergine di oliva.
Tagliare a cubetti il pane e tostarlo in una padella antiaderente con un goccio di olio extravergine di oliva, fino a dorarlo.
Dividere la zuppa in ciotole monoporzione, aggiungere i crostoni di pane, gli champignon a crudo e cospargere il tutto di Gruyère e sbrinz grattugiati.
Gratinare la zuppa in forno fino a completa doratura.
Zuppa di cipolle in gratin con champignon e sbrinz
RSI Filo diretto 27.11.2018, 11:33
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