Jamie Oliver served up a tasty get ahead seven veg sauce on Jamie: Fast and Simple.

The ingredients are: 2 red onions, 2 carrots, 2 small bulbs of fennel, ½ a head of celery, 2 red peppers, ½ a butternut squash (600g), olive oil, 1 teaspoon dried rosemary and 3 x 400g tins of plum tomatoes.

See recipes by Jamie in his book titled: Simply Jamie available from Amazon now.