Preheat oven to 350°F. Line a 9 x 9 inch square baking pan with parchment paper. (I like to do the 2 sheets of parchment paper going in opposite directions, like in the photo above).
In a food processor, add 1 1/2 cups cheese, eggs and seasoning. Blend until everything is combined.
Scoop out batter into baking pan. Carefully spread mixture until it evenly covers the bottom of the pan. Place into the oven and bake for about 20 minutes. The crust should be fairly firm with no wet dough remaining on top. Remove from oven and let cool for a few minutes.
Preheat oven to 425F. Carefully remove crust off of parchment paper and place onto an oven-safe cooling rack. The cooling rack will help allow the bottom to crisp up. Sprinkle surface with remaining 1/2 cup cheese. If desired, you can substitute 2 tbsp of mozzarella for 2 tbsp of parmesan which gives it a little different flavor. Place cooling rack into the oven and cook breadsticks for about 5 minutes, or until cheese is melted and blistered.
If desired, sprinkle with parsley before cutting and serving.
You can add in other cheese blends for more variation but I recommend that the crust be mainly mozzarella cheese as some cheeses, like cheddar, will cause the crust to be too salty.