whisk ingredients together in medium bowl then let sit for 30 minutes
Add salt and pepper to taste
salad
cut ends off of blood oranges then carefully slice off skin, cutting just enough to slice off pith (the white stuff) then gently cut out wedges of orange in between membrane
add spinach to a salad bowl and toss with orange wedges and pumpkin seeds
arrange salad on plates, add prosciutto on top, drizzle with blood orange vinaigrette, season with salt and pepper to taste. Serve and enjoy!
Notes
Blood oranges should be firm and heavy for their size. Select thin-skinned oranges with a smooth texture.