"The hearty corn bread topping creates the “bun” for this delicious sloppy Joe casserole. Get a head start by using thawed Make-Ahead Ground Beef in place of the ground beef and onion...."
INGREDIENTS
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1 lb lean (at least 80%) ground beef
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1 medium onion, chopped (1/2 cup)
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1 can (15 oz) tomato sauce
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1 tablespoon packed brown sugar
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2 teaspoons Worcestershire sauce
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1 teaspoon yellow mustard
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1 pouch (6.5 oz) Betty Crocker® golden corn muffin and bread mix