Barbecued Beef Recipe Type: Slow Cooker Cuisine: Superfoods Author: Don Orwell Ingredients 1-1/2 cups tomato paste 1/4 cup lemon juice 2 tbsp. mustard 1 chopped carrot 1/2 tsp. salt 1/4 tsp. ground black pepper 4 pounds boneless chuck roast 1/2 tsp. minced garlic Instructions Combine tomato paste, lemon juice and mustard in a large bowl.