Slow Cooker Pot Roast

Ingredients

• 1 1/2 Tbsp olive oil divided
• 1 (3 lb) chuck roast*
• Salt and freshly ground black pepper
• 1 medium yellow onion peeled, halved and cut into thick slices
• 5 garlic cloves minced (1 1/2 Tbsp)
• 1 1/4 cups cup beef broth
• 2 tsp Worcestershire sauce
• 1 Tbsp minced fresh thyme
• 1 Tbsp minced fresh rosemary
• 2 lbs small yukon gold potatoes left whole
• 5 medium carrots (about 1 lb) peeled and cut into 1-inch pieces*
• 2 1/2 Tbsp cornstarch mixed with 3 Tbsp beef broth optional, for thickening gravy
• 2 Tbsp chopped fresh parsley