01 -
Chop the spinach, dice the cherry tomatoes, and finely chop the red onion. Combine in a large bowl with shredded mozzarella and crumbled feta. Mix thoroughly until the ingredients are evenly incorporated.
02 -
Lay out the tortillas on a flat surface. Spread one-third of the filling evenly over half of each tortilla, bringing the mixture to the edges. Fold each tortilla over to create a half-moon shape, pressing gently to seal.
03 -
Heat 1/2 tablespoon olive oil in a 10-inch skillet over medium heat. Place a folded quesadilla into the pan. Cook for 3 to 4 minutes per side, pressing with a spatula, until golden and cheese is melted. Repeat with remaining quesadillas, adding more oil as needed.
04 -
Transfer cooked quesadillas to a cutting board. Allow to cool for 1 minute, then slice each into wedges. Serve warm with salsa, sour cream, or other preferred dips.