Lasagnette with spinach and parsnip

Ingredients

• 1 onion
• 300 grams parsnip
• 200 grams carrots*
• 100 grams fresh spinach*
• 700 grams beef mince
• 2 can chopped tomatoes
• 200 ml water
• 1 cube beef stock
• 250 grams wholewheat pasta
• 200 ml low fat mornay sauce
• 50 grams grated cheese
• salt
• pepper
• olive oil