Heat a large non-stick skillet over medium heat.
Place one flour tortilla flat in the skillet.
Sprinkle the shredded cheddar cheese evenly over the tortilla.
Place the second tortilla on top, pressing gently.
Cook for 2 to 3 minutes until the bottom tortilla is golden brown and the cheese begins to melt.
Carefully flip the quesadilla using a spatula and cook the other side for another 2 to 3 minutes until golden brown and the cheese is fully melted.
Remove from the skillet and let it cool for a minute before cutting into 4 wedges.
Serve warm.