Make the ricotta mixture! To do this, add ricotta, parmesan, garlic, lemon zest, basil, parsley, salt and pepper to a bowl and mix until smooth and fully incorporated.
Stuff the prepared squash blossoms with the ricotta mixture. You can do this by hand, with a spoon, or with a piping bag. Twist the ends of each flower to close them. Then dunk in egg white and roll in flour.
Spray your air fryer basket and each squash blossom with avocado oil. Then air fry at 375° Fahrenheit for 14 minutes, tossing halfway through. Serve immediately with some warm marinara!