Vegetable lasagne - Netmums

Ingredients

• 1kg sweet potato (peeled and cut into chunks)
• 2 peppers (any colours you fancy), chopped
• 3 tbsp olive oil (2 tbsp for roasting the veg and another 1 tbsp for frying)
• 4 spring onions, sliced
• garlic (1x clove), finely chopped
• 400g chopped tomatoes (1x tin)
• 1 tsp brown sugar
• dried oregano (just a pinch)
• 200g spinach
• 50g butter
• 50g flour
• 600ml milk
• 8 lasagne sheets
• parmesan cheese, grated