Spag Bol is not Spaghetti Bolognaise. Spag Bol is a British institution, a dish done quite wrong what with the sauce not being incorporated into the pasta, but so what? It's Spag Bol and the sauce on top of the pasta is how it's done. Deal with it ...
Spag Bol is: beef mince, onion, garlic, tomatoes, tomato puree, oregano, carrots, mushrooms and stock.
Carrots and mushrooms, neither of which I have in so I went with butternut squash and courgette, both of which I did have in.
It worked out well ...
Same drill, beef mince, onion, garlic, tomatoes, tomato puree, oregano, butternut squash, courgette and stock. Serve over pasta - in my case, a rice noodle which is a bit like tagliatelle. Fresh basil to garnish.