Prepare the Ingredients: Drain and rinse the butter beans. Chop the cherry tomatoes, red onion, and parsley.
Make the Dressing: In a small bowl, whisk together olive oil, lemon juice, minced garlic, salt, black pepper, and chilli flakes (if using).
Assemble the Salad: In a large mixing bowl, combine the butter beans, cherry tomatoes, red onion, and parsley.
Dress and Toss: Drizzle the dressing over the salad and toss gently to coat all ingredients evenly.
Serve and Enjoy: Serve immediately at room temperature or chill for later. Garnish with extra parsley if desired.