Using ingredient spanish onions in eighths

Spaghetti With Caramelized Onions, Anchovies

• 2 spanish onions in eighths (cut)
• 2 bunches italian parsley roughly (chopped)
• 1 anchovies
• 170 gr spaghetti
• 110 gr bread crumbs (freshly toasted)
• 45 ml extra-virgin olive oil (plus)
• 9 gr chili flakes (crushed)
• 4 slices garlic thinly (cloves sliced)