1. Peal KINGS Fuji Apples and cut them in half and clean out the core. Cut each half into slices and combine with the cinnamon and vanilla. Toss apples to evenly coat and place in a pre-heated oven at 350 degree oven for approximately 20 minutes. Remove from oven and place in a covered bowl to cool. Reserve the juice.
2. Collect the juice from the apples and place in a blender with a few slices of the roasted apples. Pulse to liquefy. Add the white wine vinegar and pulse to combine. Add the olive oil and pulse again. Taste for seasoning and add salt and pepper as needed. You may need to add a bit more vinegar or oil to get the consistency you want.
3. Mix the spinach, walnuts, gorgonzola cheese and pears. Add ¼ cup of the vinaigrette, or more if you wish.