Green Bean, Butter Bean, and Tomato Salad

Ingredient:

• 1 pound fresh green beans, trimmed
• 1/2 cup salted roasted cashews
• 1/2 cup drained jarred roasted red bell peppers
• 1/2 cup drained sun-dried tomatoes in oil
• 2 large garlic cloves
• 1/4 cup plus 3 tablespoon extra-virgin olive oil, divided
• 5 tablespoons rice vinegar, divided
• 2 1/4 teaspoons kosher salt, divided
• 1 (15.5-ounce) can large butter beans, rinsed and drained
• 2 cups red and yellow cherry tomatoes (about 10 ounces), halved
• 1 cup pitted Castelvetrano olives, torn in half
• 1/2 teaspoon black pepper, plus more to taste
• Fresh parsley leaves and flaky sea salt, for garnish