Craving a fusion of classic comfort food and Mexican-inspired flavors? Look no further than the roast beef quesadilla, a mouthwatering combination that's sure to become a staple in your recipe repertoire. This dish marries tender, slow-cooked roast beef with melted cheese, crispy tortillas, and a symphony of fresh toppings. Let's dive into this delicious recipe and explore some creative variations to make it your own.
Ingredients and Preparation
Before we start, gather your ingredients and preheat your pan. This recipe serves 4 and takes about 30 minutes to prepare.
- 1 lb (450g) cooked, thinly sliced roast beef
- 8 large flour tortillas
- 2 cups (225g) shredded Mexican cheese blend
- 1 small red onion, thinly sliced
- 1 jalapeño, seeded and thinly sliced (optional)
- 1 cup (150g) cherry tomatoes, halved
- 1/2 cup (120g) sour cream
- 1/4 cup (60g) mayonnaise
- 1 tbsp (15ml) lime juice
- Salt and pepper, to taste
- 2 tbsp (30ml) olive oil
Instructions
Prepare the Beef and Toppings
In a small bowl, mix together sour cream, mayonnaise, lime juice, salt, and pepper. Set aside to make the creamy lime sauce. In another bowl, combine sliced red onion, jalapeño (if using), and cherry tomatoes.

Assemble the Quesadillas
Lay out 4 tortillas and sprinkle each with 1/4 cup of cheese. Evenly distribute the sliced roast beef over the cheese, followed by the onion and jalapeño mixture. Top each with another 1/4 cup of cheese and a second tortilla.
Cook the Quesadillas
Heat 1 tbsp of olive oil in a large skillet over medium heat. Carefully place one quesadilla in the skillet and cook until golden brown and crispy, about 2-3 minutes. Flip and cook the other side for another 2-3 minutes, until the cheese is fully melted and the tortilla is crispy. Repeat with remaining quesadillas, adding more oil as needed.
Serve
Transfer the cooked quesadillas to a cutting board and let them rest for a minute. Cut each quesadilla into 4 triangles. Serve with the creamy lime sauce for dipping and enjoy your delicious roast beef quesadillas!

Creative Variations
Looking to switch things up? Here are some creative variations to make your roast beef quesadillas uniquely yours:
| Variation | Ingredients to Add or Substitute |
|---|---|
| BBQ Beef Quesadilla | Use leftover BBQ roast beef and add sliced red bell pepper, red onion, and a drizzle of BBQ sauce. |
| Southwest Style | Add sliced avocado, black beans, and corn. Top with chopped cilantro and a dollop of Greek yogurt mixed with lime juice. |
| Italian-Inspired | Substitute the Mexican cheese blend with mozzarella, add sliced roasted red peppers, and top with fresh basil and a balsamic glaze. |
Don't be afraid to experiment with different ingredients and flavors to make these quesadillas your own. Enjoy the process and happy cooking!























