01 -
In a mixing bowl, combine diced tomato, red onion, chopped spinach, crumbled feta cheese, and shredded mozzarella cheese until evenly mixed.
02 -
Distribute one third of the filling mixture over half of each tortilla. Fold the empty half over the filling to create a semicircle.
03 -
Heat a small amount of oil in a large flat pan or griddle over medium heat. Place the folded tortillas onto the pan and cook for 3 to 4 minutes per side, pressing gently with a spatula, until both sides are lightly browned and cheese is fully melted.
04 -
Cut each quesadilla into 4 wedges and serve immediately with desired accompaniments such as salsa, sour cream, or pico de gallo.