Slow Cooker Beef Bourguignon
Ingredients:
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3 tablespoons butter
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3 tablespoons vegetable oil
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2 medium onions, quartered
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2 pounds beef stew meat
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1 (750 milliliter) bottle red wine
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6 carrots, chopped into large chunks
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3 sprigs fresh thyme
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2 large bay leaves
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salt and freshly ground black pepper to taste