It's a doddle china
sweat onion and garlic together (bit of chopped streaky bacon if you want), season well with smoked paprika and black pepper, add chorizo in lumps, sweat a bit more, add a can of well rinsed butter beans and some red pepper and turn to snuggle. Add a tin of chopped toms and make up a ham stock cube, a good tablespoon of tomato puree and a couple of splashes of worcester sauce to measure 2/3rds up the empty tomato tin. Add to the pan with 1 or 2 bay leaves. Simmer part covered for 40-50 mins.
You can swop leftover boiled spuds for the butter beans, but fry them fairly crisply. Once you're happy with the end result, crack a couple of eggs on top and stick it in a medium oven to bake for eight or ten mins to set - a bastardised and tasty huevos rancheros.
Serve with green salad and crusty bread.