In a medium bowl, whisk together the peanut butter, honey, cinnamon, and vanilla.
Cut off the stems from the the strawberries, then slice. Slice the banana.
On a cutting board, lay out the tortilla and spread ½ of the peanut butter mixture across the top ½ of the tortilla. Arrange strawberry and banana slices over the peanut butter, then fold the other side of the tortilla over the fruit. Repeat with the remaining ingredients
In a large pan over medium heat, melt ½ tablespoon butter. Place the quesadilla in the hot pan and cook until golden, about 2 minutes. Flip and continue cooking until golden on the other side, 1–2 minutes more. Remove from the heat and repeat with the other quesadilla.
Cut each quesadilla into 4 pieces, then serve. Enjoy!