Adrienne's Overnight Barbecued Beef Sandwiches

Ingredients (17)

• + 1 large onion, chopped add to pantry
• + ½ cup brown sugar add to pantry
• + 1 teaspoon ground black pepper add to pantry
• + ¼ teaspoon salt add to pantry
• + 1 teaspoon chili powder add to pantry
• + 1 teaspoon paprika add to pantry
• + 1 teaspoon dried oregano add to pantry
• ✓ 2 cloves garlic, minced
• ✓ 1 cup ketchup
• ✓ ½ cup water
• + ½ cup white vinegar add to pantry
• + 2 tablespoons canola oil add to pantry
• + 2 tablespoons Worcestershire sauce add to pantry
• + 3 drops liquid smoke flavoring add to pantry
• + 1 (3 pound) beef brisket add to pantry
• + 2 teaspoons cornstarch add to pantry
• + 10 whole-wheat buns add to pantry