Easy Lemon Chicken Potato Casserole

Bahan-bahan (6 porsi)

• 2.5 cups condensed cream of mushroom OR cream of chicken soup (the equivalent of 2 cans)
• 1/2 cup milk
• 1.5 lbs . Yukon gold potatoes, very thinly sliced (no thicker than 1/8″)
• 2 cloves garlic, minced
• 1 small white onion, peeled and thinly sliced
• 1.5 lbs . boneless, skinless chicken breasts
• salt and freshly-ground black pepper
• 1 lemon, thinly sliced and halved (into half coins)
• (optional garnish: chopped fresh parsley or fresh thyme)