Step 1: 1. Chop the carrots, potatoes, onion and garlic. Prepare the stock.
Step 2: 2. Heat the oil in a large pan and fry the onions and garlic for about 3 minutes.
Step 3: 3. Turn down the heat and add the butter, carrots, potatoes and the seasoning. Stir all together.
Step 4: 4. Add the tomatoes and stock. Turn up the heat again and cook for 10 minutes.
Step 5: 5. Add the frozen peas and stir.
Step 6: 6. Place in the oven for 10 minutes.
Step 7: 7. Allow to cool for 15 minutes before blending or crushing with a potato masher.
Step 9: the main ingredients cost about £2 from sainsbury’s and makes enough for 4 meals.