Combine yogurt and flour in a large bowl; stir until smooth. Add cottage cheese and next 4 ingredients, stirring well. Stir in rice, Cheddar cheese, green onions, 3 tablespoons parsley, and cilantro.
Spoon mixture into a 2-quart baking dish coated with cooking spray. Bake, uncovered, at 350° for 30 minutes or until thoroughly heated. Sprinkle with remaining 1 tablespoon parsley.