In a small bowl, gently mix the diced mango, red onion, jalapeño, and chopped cilantro.
Spread an even layer of goat cheese on each tortilla.
Spoon the mango mixture onto one half of each tortilla.
Fold the tortilla in half over the filling to form a semicircle.
Heat a large skillet over medium-high heat.
Place the quesadillas in the skillet and cook for about 2 minutes per side, or until the cheese softens and the tortillas are golden and crisp.
Lower the heat to medium if the tortillas are browning too quickly.
Remove from the skillet and slice each quesadilla into 4 wedges.
Serve warm and enjoy! For an extra flavor boost, add a drizzle of honey or a squeeze of lime juice. They are great with salsa, guacamole, or sour cream for dipping. Adjust the jalapeño based on your spice preference.