Creating this vibrant Strawberry Spinach Salad (with Balsamic Vinaigrette) is easy with these simple instructions:

1. Wash Ingredients: Thoroughly wash the fresh spinach and strawberries under cold water. Pat them dry with a clean kitchen towel.
2. Slice Strawberries: Remove the green tops and slice the strawberries into quarters.
3. Prepare Spinach: Place the fresh spinach leaves in a large salad bowl.
4. Add Strawberries: Add the sliced strawberries to the spinach, distributing them evenly.
5. Thinly Slice Red Onion: Add the thinly sliced red onion on top of the spinach and strawberries.
6. Add Cheese and Nuts: If using, sprinkle feta cheese and sliced almonds or walnuts over the salad.
7. Make the Dressing: In a small bowl, whisk together the balsamic vinegar, olive oil, honey or maple syrup, and a pinch of salt and pepper.
8. Dress the Salad: Drizzle the dressing over the salad just before serving. Toss gently to combine all ingredients.
9. Serve Immediately: Plate the salad and serve it fresh for the best flavor and texture.

This step-by-step guide ensures you achieve the best flavor and presentation for your salad.