01 -
In a mixing bowl, combine the shredded mozzarella, crumbled feta, chopped spinach, diced tomato, thinly sliced red onion, and black pepper. Mix thoroughly to distribute ingredients evenly.
02 -
Lay one flour tortilla flat and place one-quarter of the filling mixture on half of the tortilla. Fold the tortilla over to cover the filling, creating a half-moon shape.
03 -
Preheat a non-stick skillet over medium heat and add olive oil to coat the surface evenly.
04 -
Place the assembled tortilla in the skillet and cook for 3 to 4 minutes until the bottom is golden brown and crispy.
05 -
Carefully flip the quesadilla and cook for an additional 3 to 4 minutes until the other side is golden and crispy and cheeses have melted.
06 -
Remove from heat, slice into wedges, and serve warm for optimal flavor and texture.