Prepare the Vegetables: Wash and dry your mixed greens thoroughly. In a large bowl, combine the mixed greens, cherry tomatoes, diced bell pepper, sliced cucumber, and red onion.
Add Toppings: Sprinkle the crumbled feta cheese and chopped walnuts on top of the mixed greens and veggies.
Make the Dressing: In a small bowl, whisk together olive oil, balsamic vinegar, and a pinch of salt and pepper until combined.
Combine & Serve: Drizzle the dressing over the salad. Toss everything gently to ensure the greens and veggies are well-coated. Serve immediately for the freshest taste!