Green Chili Potatoes Au Gratin Recipe

Ingredients For Green Chili Potatoes Au Gratin Recipe

• 2.5 pound Russet potatoes, 4 5 medium sized
• 1 Yellow onion, thinly sliced
• 2 teaspoon Salt
• 3 tablespoon Unsalted butter
• 0.25 cup All purpose flour
• 1 cup Low sodium chicken broth
• 0.25 cup Whole milk
• 0.5 teaspoon Garlic powder
• 0.5 teaspoon Kosher salt
• 0.25 teaspoon Black pepper
• 14 ounce Green chilies, chopped
• 1 cup Sharp cheddar cheese, shredded, plus more for topping
• 0.5 cup Parmesan cheese, shredded
• As required Salt and pepper, to taste