Slow-Cooker Tangy Barbecued Beef Sandwiches

Ingredients

• 1 boneless beef chuck roast (3 1/2 to 4 lb), cut crosswise into 1/4-inch slices
• 1 large onion, chopped (1 cup)
• 4 cloves garlic, finely chopped
• 1/2 cup packed brown sugar
• 2 teaspoons ground mustard
• 1 teaspoon chili powder
• 1 teaspoon paprika
• 1/3 cup vinegar
• 1/3 cup Worcestershire sauce
• 3 tablespoons lemon juice
• 1 3/4 cups ketchup
• 22 sandwich buns, split

Instructions

1. In 3- to 4-quart slow cooker, mix all ingredients except buns.
2. Cover; cook on Low heat setting 5 to 6 hours, stirring occasionally. Cut off top of each bun; pull some of bread out of each bun. Fill buns with beef mixture.