Spread 1/4 cup refried beans on each of 4 tortillas.
Place 1 bean-topped tortilla in medium skillet over medium heat. Spread 2 tablespoons dip over beans. Top with an additional tortilla. Heat 5 minutes.
With large pancake turner, turn quesadilla; heat an additional 1 to 2 minutes. Repeat with remaining tortillas and dip.
Cut each quesadilla into 8 wedges. Serve with guacamole and salsa.