Start by making the avocado dressing. In a blender or food processor, combine all dressing ingredients and process until smooth and creamy.
Then, assemble your quesadillas. There's enough dressing to make up to 8 quesadillas (depending on how much you use), but you can make as many as you like and save the dressing for later.
Start by spreading the avocado dressing onto the brown rice tortillas. Then, layer with spinach and baby kale.
If desired, toast quesadillas in a frying pan with a little olive oil, about 2-3 minutes on each side on medium low heat.