Make the Dressing:
In a mason jar, add the olive oil, balsamic vinegar, maple syrup, Dijon mustard, salt, and black pepper.
Close the lid and give the jar a good shake. If you don’t have a jar, whisk the ingredients in a small bowl until they’re well mixed.
Prep the Salad:
Place the spinach in a large salad bowl.
Top the spinach with sliced strawberries, blueberries, and thin slices of red onion.
Crumble the feta cheese over the top.
Sprinkle the chopped pecans over everything.
If you have a lemon, grate a little lemon zest over the salad to add extra flavor.
Dress and Toss:
Right before serving, shake the vinaigrette once more to mix it.
Drizzle about half of the dressing over the salad.
Use tongs or salad forks to toss the salad gently.
Give it a taste and add more dressing if you like.
Enjoy:
Serve the salad right away. If you have any leftover dressing, pop it in the fridge for later.