In a small bowl or jar, combine the balsamic vinegar and honey (or brown sugar). Whisk until well blended.

Rinse the baby spinach under cold water to remove any dirt or grit. Pat dry with a clean kitchen towel or use a salad spinner.

Using a sharp knife, hull and slice the strawberries into thin pieces.

In a large bowl, add the baby spinach, sliced strawberries, blueberries, crumbled feta cheese, and toasted pecans. Gently toss everything together.

Drizzle your homemade balsamic dressing over the salad just before serving. Toss lightly again to ensure everything is evenly coated.