Daring Bakers March 2013 - Hidden veggies challenge

Ruth from Makey-Cakey was our March 2013 Daring Bakers’ challenge host. She encouraged us all to get experimental in the kitchen and sneak some hidden veggies into our baking, with surprising and delicious results! In this challenge the mandatory requirement was to bake a sweet cake, biscuit or confectionery with a hidden vegetable ingredient. Thanks Ruth for the wonderful challenge!

I decided to make "chestnut" roll using  potatoes instead of chestnuts. Recipe for the sponge is from my friend Irena and my neighbor gave me the recipe for the filling.

Sponge

• 75 g flour
• 25 g cocoa powder
• 1 teaspoon baking powder
• 2 eggs
• 120 g sugar
• 120 ml milk
• 30 g butter

Preheat the oven to 180°C and line baking pan (40 x 40 cm) with parchment paper. In a small saucepan heat milk and butter until butter melts. Mix eggs with sugar. Add sifted flour, cocoa powder and baking powder and mix until combined. Stir in the milk and melted butter. Pour the mixture into prepared pan and bake for 15 minutes. Turn sponge onto a kitchen towel sprinkled with caster sugar. Remove parchment paper and roll the sponge up from the short side rolling the kitchen towel inside the cake. Stand the rolled sponge o a wire rach  and allow the sponge to cool to room temperature. Carefully unroll and spread the filling over the sponge, leaving 1 cm border all the way around. Re-roll the cake without the kitchen towel and place cake seam-side down onto serving tray. Refrigerate over night and cut into slices to serve. 

Filling

• 500 g potato
• 100 g grounded walnuts
• 2 - 3 tablespoons rum
• 100 g softened butter
• 75 - 100 g icing sugar

Peel and dice the potato. Cook it in water until soft. Purée, stir in walnuts and rum and set aside to cool. Mix butter with icing sugar. Add the mixture into potatoes and mix until combined. 

Nakon kratke pauze, ponovno sudjelujem u Daring Bakers izazovima. Ovog puta nam je Ruth s bloga Makey-Cakey dala zadatak da sakrijemo povrće u slatke deserte. Uobičajeno povrće u takvim receptima su tikvice (isprobala sam i objavila nekoliko recepata), grah (ne zvuči mi privlačno), cikla (ne volim ju), mrkva (računala sam da će biti puno mrkvastih recepata). Na kraju mi je sinuo recept koji nikako da isprobam, a dobila sam ga prije nekoliko godina od susjede. Riječ je o lažnom kolaču od kestena, a umjesto kestena se koristi krompir. Umjesto biskvita preporučenog u receptu (štedim jaja za Uskrs), odlučila sam ponoviti Irenin recept koji sam koristila prilikom izrade čokoladnog tiramisua.

Biskvit

• 75 g glatkog brašna
• 25 g kakaa
• 1 žličica praška za pecivo
• 2 jaja
• 120 g šećera
• 120 g mlijeka
• 30 g maslaca
• rum

U lončiću otopite maslac u mlijeku na laganoj vatri. Prosijte brašno s kakaom i praškom za pecivo.  Izmiksajte jaja sa šećerom. Umiješajte mješavinu s brašnom te na kraju mlijeko s maslacem i rum. Smjesu izlijte u lim dimenzija 40 x 40 cm obložen papirom za pečenje. Pecite 15ak minuta u pećnici zagrijanoj na 180°C. Biskvit preokrenite na kuhinjsku krpu posutu šećerom, odstranite papir za pečenje i zamotajte zajedno s krpom. Pustite na rešetki da se ohladi.

Krema

• 500 g krompira
• 100 g mljevenih oraha
• 2-3 žlice ruma
• 100 g omekšalog maslaca
• 75 - 100 g šećera u prahu

Krompir ogulite i narežite na kockice. Kuhajte u vodi dok ne omekša. Skuhani krompir procijedite i onako vrućeg izmiksajte mikserom u pire. Umiješajte orahe i rum i pustite da se ohladi. Izmiksajte maslac sa šećerom pa dodajte u smjesu s krompirom. Odmotajte biskvit i premažite kremom. Zarolajte, položite na pladanj, dekorirajte po želji i stavite u frižider preko noći.