Step 1

Add all sauce ingredients to a medium mixing bowl. Whisk until combined.

Step 2

Cover and chill in the refrigerator for at least 2 hours or until ready to use.

Step 3

Add butter or oil to a skillet and heat over medium heat.

Step 4

Assemble quesadilla(s): Layer a tortilla, shredded cheese, add-ins (see notes above), and 2 tablespoons quesadilla sauce.

Step 5

Cook in hot skillet until both sides are golden and cheese is melted (about 5 minutes).