Two Potatoes Au Gratin with Gruyère

Ingredients

• 3 medium sweet potatoes
• 6 small Yukon gold potatoes
• 1 tsp. kosher salt (FinaPod PRO Plus)
• 1/4 tsp. ground black pepper (FinaPod PRO Plus)
• 3/4 tsp. garlic powder
• 1 1/2 tsp. dried parsley (FinaPod MAX)
• 1/2 tsp. dried thyme (FinaPod MAX)
• 1/2 tsp. ground sage (FinaPod MAX)
• 1/2 tsp. dried rosemary (FinaPod MAX)
• 8 ounces (2 cups) Gruyère or sharp white cheddar grated
• 1/2 cup thinly sliced yellow onion chopped
• 1/2 cup whole milk or half-and-half
• 1/2 cup low-sodium chicken broth