Preheat oven to 350 °F. Lightly coat a 9×13-inch baking dish with cooking spray. In a small bowl, combine cup mozzarella cheese and 1 Tbsp. Parmesan cheese. Set aside.
In a medium bowl, mix remaining mozzarella and Parmesan cheeses with cottage cheese. Set aside.
Cook pasta in boiling water until slightly soft. Strain, cool, and lightly oil.
Combine all ingredients with orzo and mix well.
Prepare vinaigrette by putting all ingredients in a blender or food processor. Blend thoroughly.