Pashtet Iz Pachonki

• 1 egg l
• 1/2 garlic clove (minced)
• 270 gr chicken livers
• 75 gr butter
• 120 ml chicken stock
• 3 gr salt
• 1 gr black pepper
• 2 slices onions l (sliced thin)
• 2 slices bread crustless (white)