Hazırlanışı
1Trim stem and cut butternut squash in half lengthwise. Place in a microwave-safe dish, cover with plastic wrap, and microwave until tender, about 8 minutes. Transfer to paper towels to cool. Discard skin and set squash aside.
2Whisk mascarpone cheese, 1/2 cup Parmigiano-Reggiano cheese, eggs, salt, and black pepper in a bowl until smooth. Whisk in butternut squash until blended.
3Whisk in 1/2 cup flour until just incorporated. Whisk in remaining 1/2 cup flour, stirring until flour just disappears. Cover and refrigerate for at least 8 hours or overnight.