Cottage pie | Women's Weekly Food

Ingredients

• 2 teaspoons olive oil
• 1 kilogram (2 pounds) minced (ground) lean beef
• 1 medium brown onion (150g), chopped finely
• 1 medium carrot (120g), sliced finely
• 1 trimmed celery stalk (100g), sliced finely
• 1 tablespoon chopped fresh thyme leaves
• 1 cup (250ml) beef stock
• 1 tablespoon worcestershire sauce
• 1/4 cup (70g) tomato paste
• 400 gram (12½ ounces) canned diced tomatoes
• 1/2 cup (60g) frozen peas
• 2 tablespoons grated cheddar
• Mashed potato topping
• 6 medium potatoes (1.2kg), chopped coarsely
• 60 grams (2 ounces) butter
• 1/4 cup (60ml) skim milk