Casserole Kentang

Bahan-bahan (10 porsi)

• 3 lbs . Yukon gold potatoes ($2.93*)
• 1/4 cup butter ($0.53)
• 1/2 onion ($0.35)
• 2 cloves garlic ($0.16)
• 1/2 tsp salt ($0.02)
• 1/4 cup all-purpose flour ($0.05)
• 2 cups milk (any kind, including plant-based, $0.96)
• 3 1/2 cups extra sharp cheddar cheese (divided, $3.21**)
• 1/2 cup sour cream ($0.91)
• 1 cup corn flake cereal (crushed, $0.44***)