Slow Cooker French Dip Sandwiches - flavor-packed slow cooker french dip sandwiches with melted provolone cheese and toasted garlic bread rolls.
Pat chuck roast dry and season all over with 2 teaspoons of kosher salt and 1/2 teaspoon freshly ground black pepper. (Increase salt if using a roast larger than 2.5 pounds)
Heat oil in a large cast iron skillet over medium-high heat. Sear roast on both sides. Transfer roast to slow cooker and add onions to skillet. Saute 2-3 minutes just until they start to soften. Add red wine to skillet and let simmer until reduced by half.
Transfer onion and red wine mixture to slow cooker. Add beef broth, garlic, and bay leaf to slow cooker. Cook on high for 6 hours or low for 8 hours. Cooking time will vary, beef should be fork tender and shred easily.
Remove beef from slow cooker and strain juice to use for dipping. The onions will be very soft and can be added to the sandwiches.
Preheat oven broiler. Melt butter and stir in garlic powder. Place open rolls on baking sheet and brush with melted garlic butter. Broil just until they start to brown. Remove rolls and divide shredded beef onto each roll and top with cheese slices. Return to broiler and heat just until cheese is melted. Sprinkle sandwiches with fresh parsley and serve with warm au jus.