About 500g (dry weight) navy beans, soaked and pre-cooked (for about half an hour), or any combination of cooked legumes (brown lentils and black beans in addition to navy beans is good!)
2 tins of tomatoes
3 tbsp each Worcestershire sauce*, golden syrup or honey, and apple cider vinegar
2 very large onions, finely diced
handful of diced bacon (use more if you have it, or leave it out)
3 heaping teaspoons (none of these anaemic measuring spoons, just splodge it in) of wholegrain mustard
1 tbsp paprika
I used to saute the onions and bacon, but now I can't be arsed, especially since I'm usually putting this in the crockpot at 11pm after forgetting about it until bedtime. It doesn't make a noticeable difference, but by all means saute away if you want to. Also, I used to only put in one tablespoon of apple cider vinegar, but last time accidentally put in three and it was superb, so that's what I've included.
So, easy-as method: half fill the crockpot with beans or mixed legumes, then add the rest of the ingredients and stir. Add water until about an inch below the top of the crockpot (the top of the ingredients should be about two inches below, otherwise add more beans). Leave on Auto overnight. Provides breakfast for everyone on Sundays, and a couple of people most of the rest of the week.
* If like me you start making this at 11pm and realise you've run out, I've had success replacing the Worcestershire sauce with a mixture of Vegemite, fish sauce and Balsamic vinegar.