Parmesan-Crusted Au Gratin Potatoes and Onion

Malzemeler

• Malzemeler
• 6 yemek kaşığı all-purpose flour
• 6 yemek kaşığı butter
• 2 yemek kaşığı chopped fresh parsley
• 7 g Crushed buttery round crackers (such as Ritz®)
• 0.75 bardak green onions, sliced
• 1 bardak heavy whipping cream
• 4 pound Russet potato
• 4 çay kaşığı salt and ground black pepper
• 0.33333334326744 bardak shaved Parmesan cheese
• 1 bardak shredded Asiago cheese
• 2.5 bardak shredded mild Cheddar cheese
• 400 g sweet onion
• 1.5 bardak whole milk