Prepare the vegetables and saute in a little oil / butter / fat from the joint until soft.You really need to do this, once you add the tomatoes, the potato and carrot only soften very slowly because of the acid in the tomatoes, and boiled onion is not the flavour we are after here.
While the vegetables are softening, slice about a kilo of potatoes into coins, ??? thick. You can either peel them or not.
Tip into a microwavable dish, cover them with a lid or plate and microwave until soft. It takes 10 minutes in my microwave. Set aside.
Once the veg are cooked through, add a tin of tomatoes, a couple of bay leaves and some chopped parsley if you have it. No need to worry if you have no herbs, you'll be fine without them.
Tip in a tin of beans or chickpeas, juice and all
Season with salt and pepper, I used a teaspoon of each and a sprinkle of chilli flakes, not many
Tip the vegetable mix into the baking dish you will be using.
You might need to bubble the mix to reduce the liquid down a bit
Lay the cooked potato slices over the top
Drizzle with oil and sprinkle with salt and pepper - I like to use Aleppo pepper which looks pretty, or you could use cayenne or paprika.
Now blast in a hot oven until the topping is crispy, and the base is hot, serve immediately
Notes
Variations for savoury vegetable bakes
Any root vegetable you have will work well here.
The base can be any vegetables that you think will work, I’ve tried loads of different combinations and like all of them so far.
try parsnip and chestnut
use different kinds of beans, or spicy mixed beans
swap the beans for big green or brown lentils
use mushroom ragout as the base
The vegetable bake is vegan as it is, or you can add all kinds of meaty things