Slow Cooker Barbecue Beef
Ingredients:
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3 tablespoons all-purpose flour
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3 pounds chuck roast
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15 ounces tomato sauce
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½ cup chopped onion
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⅓ cup brown sugar
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2 cubes beef bouillon
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1 ½ teaspoons chili powder
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1 clove garlic, minced
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1 teaspoon mustard powder