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| ground beef: 2 lbs |
| eggs: 1 |
| graham cracker crumbs: 1 cup (crushed) |
| onions (chopped): 1/2 cup (chopped finely) |
| salt: 1 1/2 tsp |
| black pepper: 1/2 tsp |
| tomato sauce: 8 oz |
| light brown sugar (packed): 1/4 cup |
| apple cider vinegar: 1/4 cup |
| ground mustard: 1 tsp |
Credit: Food.com