Heat the oil in a large saucepan over medium heat. Add the onion and cook until softened. Increase the heat, add the beef mince and stir until well coloured.
Add the garlic, capsicum, oregano and spices and stir-fry for 2-3 minutes, or until fragrant, then add the tinned tomatoes, stock and coriander. Bring to the boil, reduce heat and simmer for 30 minutes or until thickened.
To prepare the tomato salad combine the tomato, onion, lemon juice and coriander.
Divide meat among serving bowls and top with the tomato salad.
Notes
To make this more gut-friendly - you can swap out up to half of the mince and add in a tin of tinned brown lentils (drained and rinsed).