"We loved how tender this brisket came out of the slow cooker. The sauce has a robust, beefy flavor with a slight tang from the balsamic vinegar, and the rich caramelized onions complete the dish.—Taste of Home Test Kitchen..."
INGREDIENTS
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3 tablespoons olive oil, divided
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4 cups sliced onions (about 4 medium)
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4 garlic cloves, minced
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1 tablespoon brown sugar
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1 fresh beef brisket (4 to 5 pounds)
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1/3 cup all-purpose flour
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1 teaspoon salt
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1 teaspoon coarsely ground pepper
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1/4 cup balsamic vinegar
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1 can (14-1/2 ounces) reduced-sodium beef broth
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2 tablespoons tomato paste
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2 teaspoons Italian seasoning
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1 teaspoon Worcestershire sauce
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1/2 teaspoon paprika
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1 tablespoon cornstarch
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2 tablespoons cold water