Preheat oven to 350℉. Arrange walnuts on baking sheet. Toast for 5-8 minutes and set aside.
In a small saucepan, bring 1/2 cup water to a boil. Add quinoa and cook according to manufacturer's instructions. Set aside and let cool.
In a large bowl, toss spinach/dark greens, cabbage, grapes, orange slices, dried cranberries, and about 1/2 cup quinoa (you may have some leftover). Add dressing just prior to serving.
Raspberry Vinaigrette
In a food processor, add all ingredients and process until smooth. Store in fridge until ready to add to salad. Recipe makes more dressing than necessary for one salad. (Makes 1 1/4 cups)