1.Heat oven to moderate, 180°C (160°C fan-forced).
2.Heat oil in a large frying pan on medium. Saute onion, capsicum chilli and garlic 3-4 minutes, until tender. Add oregano and spices and cook 1 minute, until-fragrant.
3.Increase heat to high. Brown mince well, 5-10 minutes, breaking up lumps as it cooks.
4.Stir in tomato and water. Simmer 10 minutes. Add kidney beans. Simmer, stirring occasionally, 10 minutes, until sauce is thick.
5.Arrange beef and a quarter corn chips in an ovenproof dish. Sprinkle with grated cheese to taste. Bake 10-15 minutes, until cheese melts.
6.Meanwhile, make guacamole: mash and lime juice in medium bowl. Stir in tomato, onion and coriander.
7.Serve nachos accompanied with remaining corn chips, sour cream, guacamole and lime wedges.
Add extra kidney beans to make this dish go further.
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