INGREDIENTS
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1 1/4 pounds lean ground beef
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1 (8 oz.) can refrigerated crescent dough sheet
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1 yellow onion, chopped
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1 egg, lightly beaten
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1 cup (sharp) cheddar cheese, grated
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1 cup mozzarella cheese, grated
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1 tablespoon water
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1 tablespoon Dijon mustard
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2 teaspoons Worcestershire sauce
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1 teaspoon garlic powder
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kosher salt and freshly ground pepper, to taste
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black olives, pitted and chopped, optional