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These mini sloppy joe "subs," complete with seasoned meatballs, work just as well as apps as they do as a main.
WD Kitchen Tip: Make the meatballs way ahead of time. Freeze the cooked meatballs and sauce separately for up to 2 months. Thaw in the refrigerator, then warm together in a saucepan...."
INGREDIENTS
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1 large egg
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2 tbsp. Ketchup
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2 tbsp. Worcestershire sauce
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2 tbsp. balsamic vinegar
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Kosher salt and pepper
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1/4 c. panko bread crumbs
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2 large cloves garlic, finely chopped
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1 1/4 lb. ground beef
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1 tbsp. olive oil
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1 Onion, finely chopped
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1 14-oz. can crushed tomatoes in purée
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2 tbsp. brown sugar
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Green salad, for serving