18-ounce package feta cheese, crumbled or Parmesan cheese, chunks
For the Pesto:
Bring pasta to boil in large stockpot over medium heat. Cook according to package instructions. Remove from heat and pour through a strainer when cooked. Pour into a large mixing bowl. Add grape tomatoes, onion, feta cheese and sunflower seeds. Make pesto by adding all ingredients to a food processor or blender until smooth. Pour over pasta and stir until well-combined. Serve warm or store in an airtight container and store in the refrigerator. Bring to room temperature to serve.