TEXAS CAVIAR: Combine all ingredients in non-reactive bowl. Marinate for 1 hour covered and at room temperature.
QUESADILLAS: Melt the butter on medium heat in skillet. Place 1-2 tortilla in pan (depends on how big the pan is but don't crowd!) Add some cheese and a spoonful (Tip: use a SLOTTED spoon!) of the Texas caviar on one half of the tortilla. Fold the other side of the tortilla over the caviar.
Cook 2-3 minutes on each side until the tortilla is golden brown and the cheese is soft and melt-y.