Chop the vegetables - Peel the carrots and the garlic, remove seeds from the pepper, wash all the vegetables and roughly chop. Set aside the onions and garlic from the other veg. Don't worry too much about how you chop the veg, it is going to be blended
Warm the pan - Add a little oil to a large pot and heat it over medium. Toss in the onions and garlic and cook until they’re soft and smelling good
Add the veggies - Stir in the carrots, pepper, courgette, Leek, cherry tomatoes, celery and dried oregano. Sautee for 5-10 minutes until they start to soften.
Tomatoes go in - Pour in the chopped tomatoes and water. Mix well so everything gets friendly in the pot
Simmer - Reduce the heat, cover, and let it bubble gently for 20 minutes, until all the vegetables are nice and soft.
Blend it smooth - Turn the heat off and add the fresh basil to the pot. Use a blender or stick blender to blend the sauce until completely smooth. This is where the “hidden” part happens — no one will ever know what’s in there!!
Taste and adjust - Add a little salt, pepper, or water if needed. If it tastes good, take a quiet moment to feel proud.
Serve or save - Use it right away with pasta, pizza, bolognaise etc.... or cool it and freeze for an easy future meal.