Preheat the oven to 350 degrees F. While the oven is heating up, prepare the vinaigrette: in a small bowl, whisk together the vinegars, olive oil, honey, mustard, salt and pepper. You can also combine the ingredients in a blender or vigorously shake them together in jar with a tight-fitting lid.
Spread the almonds in a single layer on a sheet pan, and toast for 5-7 minutes until golden and fragrant, shaking the pan once or twice to ensure even toasting. Set aside to cool.
In a large bowl, combine the spinach, strawberries, shallots, and avocado. You can also add the feta at this point, but I prefer to add it at the end so it doesn’t fall apart while the ingredients are mixed with the dressing.
Briefly re-whisk the vinaigrette. Drizzle half into the salad and gently toss to combine. Taste, and add more if desired. Season with salt and pepper if needed.
Divide the salad between four plates. Top each salad with feta cheese and almonds.
Notes
To save time, you can purchase toasted slivered or sliced almonds. To reduce the fat and calorie content of the salad, omit the avocado or feta cheese. If you omit the feta, you may need to add an additional sprinkle of salt to the salad to compensate for the missing salty cheese.