Potatoes Au Gratin

Ingredients

• 6 Tablespoons butter
• 2 cups milk
• 6 medium russet potatoes
• 1 teaspoon salt
• 1 cup heavy whipping cream
• 1 1/2 teaspoons dried onion flakes
• 6 Tablespoons all-purpose flour
• 3 cups freshly grated sharp cheddar cheese
• salt and freshly ground black pepper
• 2 cloves garlic