Place 4 tortillas on cookie sheet sprayed with nonstick cooking spray.
Sprinkle 1/4 cup cheese evenly on each tortilla. Top evenly with beef, jalepenos, olives and remaining 1 cup cheese.
Top with remaining tortillas. Brush with olive oil. Cover loosely with foil.
Bake 10-12 minutes or until hot and cheese melts. Or, if desired, spray quesadillas with nonstick cooking spray and brown in a large nonstick skillet over medium high heat for 1 to 1 1/2 minutes per side. Or, if desired, broil 4-6" from heat for 1-2 minutes.
Cut each tortilla into 8 wedges. Serve with salsa, sour cream and guacamole, if desired.