Roast Beef Sandwich

Ingredients

• 1 tablespoon reduced-fat mayonnaise
• 1 teaspoon prepared pesto
• 1 teaspoon grainy mustard
• Coarse salt and ground pepper
• 1 onion roll halved
• 1/2 cup mixed greens
• 3 ounces thinly sliced leftover roast beef
• 2 thin slices red onion
• 2 cornichons (or gerkins) halved lengthwise

Instructions

1. 1
   Make spread: Mix together mayonnaise, pesto, and mustard; season with salt and pepper.
2. 2
   Layer bottom roll half with spread, greens, beef, onion, and cornichons; top with other roll half.