Hashbrown Chicken Vegetable Pot Pie Casserole Recipe — The Mom 100

Ingredients

• 4 tablespoons extra-virgin olive oil ((divided))
• 1 tablespoon minced garlic
• 1 onion ((chopped))
• 2 cups diced red or white potatoes
• 1 cup sliced carrots
• ½ cup chopped celery
• 4 cups roughly chopped broccoli florets and stems
• Kosher salt and freshly ground black pepper ((to taste))
• 4 cups chicken or vegetable broth ((preferably low-sodium))
• 1 cup fresh or frozen peas
• 1 cup fresh or frozen corn kernels
• 1 ½ cups (8-ounce package) sliced mushrooms
• 1 tablespoon minced fresh rosemary ((or 1 teaspoon crumbled dried rosemary))
• 3 tablespoons unsalted butter
• ½ cup all-purpose flour
• 4 cups cubed or shredded cooked chicken
• ½ cup heavy (whipping) cream or half-and-half
• ½ cup chopped fresh flat-leaf parsley
• 2 large Idaho (all-purpose) potatoes ((about 3/4 pound; peeled and grated – see Note))