Delicious and easy-to-make beef and swiss wrap recipe

Ingredients

• 1 lb beef sirloin, thinly sliced
• 1/2 tsp salt
• 1/2 tsp black pepper
• 1 tbsp olive oil
• 4 large flour tortillas
• 1 cup shredded swiss cheese
• 1 cup diced tomatoes
• 1 cup shredded lettuce
• 1/2 cup diced red onion
• 1/4 cup mayonnaise
• 2 tbsp dijon mustard