In a small bowl or jar, whisk together the olive oil, vinegar, mustard, maple syrup, garlic, salt, and pepper until well combined. Set aside.
In a large salad bowl, combine the spinach, arugula, carrot, onion, celery, and sunflower seeds.
Pour the vinaigrette over the salad and sprinkle with feta just before serving. Toss gently to coat.
Enjoy!
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Notes
If you have raw sunflower seeds, simply toast them in a hot skillet for 2-3 minutes.StorageKeep leftovers in an airtight container and then store them in the fridge. For best results, store the greens and dressing separately since the liquid will wilt the spinach and arugula quickly. Consume within 2-3 days for optimal flavor and texture.