Breakfast Hash with 'Nduja & Kale

Ingredients

• 2-3 large Yukon Gold or red potatoes, peeled and cut into small chunks
• 1 large sweet potato, peeled and cut into small chunks
• 140g curly kale, tough stems removed, chopped
• 1 tbsp olive oil
• 1 onion, chopped
• 1 red pepper, deseeded and cut into strips or chunks
• 1 garlic clove, minced
• 1 tbsp butter
• 50g ‘nduja
• 4 eggs
• a handful of flat-leaf parsley, chopped (optional)
• salt
• freshly ground black pepper