Tuna Souvlaki Pasta Salad

Ingredients (12)

• + ½ red onion, cut into bite-size pieces add to pantry
• + 4 cups ice water, or as needed add to pantry
• + 1 (8 ounce) package tri-color rotini pasta add to pantry
• + 1 (5 ounce) can light tuna in water, drained and flaked add to pantry
• ✓ 2 stalks celery, cut into bite-size pieces
• + ½ cup roasted red peppers, drained and chopped add to pantry
• + ¼ cup smoked sun-dried tomatoes add to pantry
• + ¼ cup crumbled feta cheese add to pantry
• + 1 sprig parsley, stemmed and leaves minced add to pantry
• + 4 leaves fresh basil, rolled and very thinly sliced add to pantry
• + 2 teaspoons capers add to pantry
• + 1 cup Greek vinaigrette salad dressing add to pantry