1brown the mince and drain the fat, fry off the onion and garlic for a couple of minutes.
2add the first 8 ingredients to the slow cooker and cook on low for 4 hours or high for 2 hours.
3in an over proof dish layer half the chips, half the meat & bean mix, and half the cheese. then layer the rest of the chips, the rest of the meat & bean mix, the tomato paste & herb mix, and the rest of the cheese. 