• 

  oil for greasing

Coating

• 

  breadcrumbs fine

  50 g

Dough

• 

  water

  240 g
• 

  dried yeast

  2 tsp
• 

  sugar

  100 g
• 

  bread flour plus extra for dusting

  520 g
• 

  milk powder

  20 g
• 

  salt

  2 tsp
• 

  egg beaten

  1
• 

  butter cubed (1 cm)

  50 g

Filling

• 

  oil

  20 g
• 

  garlic cloves minced

  2
• 

  red onions cut into rings (2 mm)

  30 g
• 

  canned tuna in oil drained

  250 g
• 

  ground black pepper

  1 pinch
• 

  salt to taste

  1 pinch