Hanafi
The sources give no view for it here.
طبخ لحم العقيقة
هل يُستحب طبخ لحم العقيقة كلها حتى ما يُتصدق به منها؟
Each school’s answer
In our wordsHanafi
Not stated in the sources
Maliki
Not stated in the sources
Shafi'i
Not stated in the sources
Hanbali
Not stated in the sources
The texts
لَحْمُ الْعَقِيقَةِ: ٩ - ذَهَبَ جُمْهُورُ الْفُقَهَاءِ إِلَى أَنَّهُ يُسْتَحَبُّ طَبْخُ لَحْمِ الْعَقِيقَةِ كُلِّهَا حَتَّى مَا يُتَصَدَّقُ بِهِ. وَذَهَبَ الْحَنَفِيَّةُ إِلَى أَنَّهُ يَجُوزُ فِي الْعَقِيقَةِ تَفْرِيقُهَا نِيئَةً وَمَطْبُوخَةً. انْظُرْ (عَقِيقَةٌ ف ١٣) .
«الموسوعة الفقهية الكويتية» (Kuwait) entry «لحاق» vol. 35 p. 210
From the schools’ own books
Maliki
The sources give no view for it here.
Shafi'i
The sources give no view for it here.
Hanbali
The sources give no view for it here.
What is «in our words» is our standard wording; the books’ texts stay as they are.