In a small bowl, combine the ingredients for the dressing: olive oil, red wine vinegar, lemon juice, garlic, Italian seasonings, salt, and pepper. Mix with a fork until well incorporated and set aside.
In a large bowl, combine the ingredients for the salad: spinach, white kidney beans, red bell pepper, cucumber, onion, grape tomatoes, and Kalamata olives.
Pour the dressing over the salad and toss well until coated. Add the chopped fresh parsley and feta cheese. Mix thoroughly.
Transfer the salad to a bowl and serve.
Notes
Use High-Quality Ingredients: Choose fresh, ripe vegetables and good-quality olives, feta cheese, and olive oil for the best flavor.
Adjust Seasonings to Taste: Taste the dressing before adding it to the salad and adjust the seasoning as needed with more lemon juice, olive oil, salt, or pepper.
Let the Salad Rest: For maximum flavor, allow the salad to sit for 15 minutes before serving to allow the flavors to meld together.
Swaps: Switch out the beans and use chickpeas or cannellini instead of white kidney beans. Chickpeas provide a complete protein along with a different texture.