Cook the quinoa according to the package directions and let cool.
Prep the ingredients for the salad per the instructions above.
In a small jar with a lid, combine the lime juice, olive oil, maple syrup, and mustard. Cover and shake until mixed well. Taste for seasoning and add salt and pepper as needed.
Mix all the ingredients for the spritzer, add a hint of lime to your desired taste.
Toss the strawberries, avocados, cooked quinoa, walnuts, feta, and arugula together in a large bowl. Add the dressing and toss again. Serve with bread and spritzer.