Croque Monsieur | Kelchner's

Ingredients

• ¼ cup butter
• ¼ cup flour
• 1 ½ cups milk
• 3 tablespoons Kelchner's Hot Mustard
• Salt and pepper
• 8 thick slices of bread
• 6 oz deli sliced ham
• 4 oz gruyere cheese (grated)