Chicago Italian Beef Recipe: Slow Cooker Sandwich Heaven!

Ingredients

• 3-4 lb Beef chuck roast
• 1 tbsp Olive oil
• 1 large Yellow onion, sliced
• 4 cloves Garlic, minced
• 1 (16 ounce) jar mild or hot giardiniera, drained, reserve 1/2 cup of the oil
• 1 (1 ounce) packet dry Italian dressing mix
• 1 (0.7 ounce) packet dry au jus gravy mix
• 1 tsp Dried oregano
• 1/2 tsp Dried basil
• 1/4 tsp Red pepper flakes (optional)
• 1 (12 ounce) can or bottle of beer OR 12 oz Beef broth
• 1/2 cup Beef broth (optional)
• Salt and freshly ground black pepper to taste
• 8-10 Crusty Italian rolls
• Additional giardiniera, for topping (optional)
• Sweet roasted bell peppers, sliced (optional)