comments below from blog post
this was her lunch on a $2/day budget

macaroni with buttered peas
18 tips for minimising your food costs + a final $2 a day menu [5 ingredients | 10 minutes]

serves 1

I was really surprised that the cheapest pasta in my local supermarket was only 59c /500g about 1/10 the price I normally pay for my artesanal Italian pasta. Happy to report that the cheap pasta (pictured above) tasted pretty good.
I was also surprised how tasty and satisfying this one pot meal was. Normally I would have slathered something like this in parmesan but the sweet peas and even the pasta flavour really shines through as is. If I did have some extra money to spare, some fresh mint stirred through the hot pasta would be nice.
For a vegan version use olive oil instead of the butter.

85g (3oz) pasta 10c

100g (3 1/2oz) frozen peas 19c
20g (3/4 oz) butter 10c

Bring a medium saucepan of salted water to the boil and add pasta. Set timer according to the packet directions.

When there are 3 minutes remaining add peas and cook until pasta is just tender. Drain and return to the saucepan with the butter. Stir to crush the peas a little. Taste and season.
Cost per serve 39c.