This comes in two parts.
For the sourdough flatbread
200g plain flour
half a cup sourdough starter discard
heaped tbsp natural yogurt
a good pinch of salt
Water to mix it all into a soft-ish dough
(I had discard that I didn't want to discard but you could use more yogurt, milk, or even just water to make flatbread)
Mix ingredients into a soft dough, like this.
Wrap and chill for a short time.
Split ingredients into 50g balls and roll out into a sort of circle.
Heat a solid based frying pan and dry fry each circle of dough. It will puff up and you will get brown spots. That's not a problem.
As each on has cooked, stack them up and cover with a clean tea towel. Then pop them in a poly bag, separated with interleaving to stop them drying out and sticking.
If they do go a bit hard, just give each one ten seconds in a microwave.
The above amounts made eight at less than 1p each. The rest will freeze fine and tomorrow I am going to try to make some baked 'tortilla' chips!
For the sauce
A portion of savoury mince with veg (see link below for recipe)
some kidney beans (tinned would be fine and I guess about a quarter of a can's worth would be about right)
Some passata or other tomatoes such as some of a tin of chopped tomatoes.
spices such as chilli, smoked paprika, etc.
30 to 35g grated strong cheddar