Prepare the cheesecake filling by mixing the cream cheese, powdered sugar, and vanilla extract.
Lay four tortillas on a clean surface and evenly spread the cheesecake mixture on each.
Top the cheesecake filling with sliced strawberries and cover with the remaining tortillas.
Heat a skillet over medium heat and add butter to melt.
Place two quesadillas in the skillet and cook for 2-3 minutes on each side until golden brown.
Remove the cooked quesadillas and slice into wedges.
Serve warm and garnish with whipped cream if desired.