Vegetarian Stew

A warm hug on a plate! So easy and ridiculously cheap to make, I made too much so have frozen single portions.  Ingredients: 1 large red onion, finely chopped. 2 cloves of garlic, crushed. 1 large leek, washed and chopped. 1 medium sweet potato, peeled and diced. A chunk of pumpkin or butternut squash, peeled and diced. 2 large carrots, peeled and diced. Half a cauliflower, broken into small florets. Half a head of broccoli, broken into small florets. 1 small tin of kidney beans, rinsed ...