I make a vegan one that's really good. I'm not vegan but I cook for vegans.
I use a base of red peppers onions and garlic. Four large bell peppers, a whole bulb (small) of garlic so it has a good flavour, and one very large onion or two medium.
I roughly cut and blitz in food processor until very small chunks and cook this off in a pan in oil. Then add one full cup red lentils and a ton of chopped tomatoes.
Add in two cups of paprika gallo vegetable stock, a maggi seasoning cube and a large tablespoon of fortified yeast and a few tablespoons of tomato purée. I add a handful of oregano towards the end and salt and pepper to taste.
Simmer gently until the lentils are cooked.
It's a good Bolognese, and it's easy to convert to a chilli.
To the above recipe (leftovers) the next night add in a tablespoon of cumin powder, a teaspoon of cocoa powder, a teaspoon of chilli powder and a drained tin of kidney beans.
Yummy and easy to make in bulk and reheat. It uses much less electricity this way.