Preheat oven to 425 degrees F (220 degrees C). Grease a 9x13 inch pan.
In a large bowl, stir together the avocados, eggs, yogurt, cheese, cornmeal, and fajita seasoning until well blended. Spread the mixture evenly into the greased pan.
Bake for 17 minutes in the preheated oven, or until the top turns golden brown and a toothpick inserted into the center comes out clean.
