Hot Louisville-Style Turkey Sandwich | Savory

Ingredients

• 2 tbsp butter
• 2 tbsp flour
• 1 1/2 cups reduced-fat milk
• 1 cup grated Gruyère cheese
• 4 slices thick-cut white bread
• 1 lb sliced, roasted turkey
• 1 (4 oz) jar sliced pimientos
• 1/2 cup grated Parmesan