Slow Cooker Ten Hidden Veggie Sauce

  • Author: Ciara Attwell
  • Prep Time: 10 minutes
  • Cook Time: 4 hours
  • Total Time: 4 hours 10 minutes
  • Yield: 6 1x
  • Category: Hidden Vegetable
  • Cuisine: Slow Cooker
  • Diet: Vegetarian


A simple Hidden Veggie Sauce made in the Slow Cooker with TEN vegetables in there. A brilliant recipe for those fussy eaters!


  • 1 onion, diced
  • 3 garlic cloves, crushed
  • 2 carrots, diced
  • 1 celery stick, diced
  • 1 small courgette, diced
  • 1 red pepper, diced
  • 200g butternut squash, cubed
  • 100g broccoli florets
  • 130g cauliflower florets
  • 1 small leek, sliced
  • 100g mushrooms
  • 100g baby spinach
  • 690g jar of passata
  • 250ml water
  • 2 vegetable stock pots
  • 1 tsp dried oregano


  1. Add all the vegetable to the slow cooker.
  2. Add the passata, water, stock pots and oregano.
  3. Don’t attempt to stir everything at this point. It’s too full!
  4. Pop on the lid and cook on high for 1 hour.
  5. After an hour it will be a little easier to stir all the ingredients together.
  6. Pop the lid back on and cook for another 3 hours on high.
  7. The vegetables will have reduced considerably in size by now and you can blend them with a hand blender.
  8. Serve immediately mixed with cooked pasta or add to freezer storage containers or bags.


This sauce will keep in an airtight container in the fridge for 3 days.

It can also be frozen in individual portions or one large freezer bag. Defrost thoroughly then reheat on the hob.