Shaved brussels sprouts salad with red onion, lemon, pecorino and cashews

I absolutely do not like brussel sprouts especially when it is eaten raw. But a friend of mine made a special birthday dinner recently and made me this yummy salad. It is absolutely delicious. I can't even tell that it is made out of brussel sprouts. He added the crunch with sweet salty cashews. He got the recipe fromhttp://www.food52.com.
Ingredients:
1/2 small read onion
Juice of 1 lemon
1 tsp honey
1 tsp whole grain mustard
1 tbsp olive oil
3 cups Brussels sprouts
1/2 cup finely grated pecorino romano
1 pack of chopped Nuts+Nuts sweet salty cashews
Salt and pepper

- Soak onion slices in a small bowl of cold water for 20 minutes
- In a small bowl, whisk together lemon juice, honey, mustard and a pinch of salt and pepper.
- Whisk in the olive oil until the dressing is emulsified. Set aside.
- Trim all of the Brussels sprouts, cutting off any bruised outer leaves and slicing off a good portion of the hard root end. Using a mandoline, shave the sprouts one at a time. When you're done, use your fingers to gently separate the leaves so that the shredded sprouts resemble a very fine slaw.
-Put the sprouts in a serving bowl and toss gently with the onion (which you've now drained) and the dressing. Mix in the pecorino. Serve immediately.