Shrimp Scampi

My Moma made this for me when I was visiting last week and it was amazing!!
From Emeril Lagasse:
2 pounds shrimp, peeled and deveined - tails left on

Salt and freshly ground black pepper
Olive oil
1 small onion, sliced thinly
2 tablespoons chopped garlic
1 lemon, juiced
1/2 cup white wine
1/2 cup shrimp stock, recipe follows
2 tablespoons cold butter
2 tablespoons chopped parsley leaves
Lemon slices, for garnish
Rice, as accompaniment

Directions
Season the shrimp thoroughly with salt and pepper. Heat a large saute pan over medium-high heat. When the pan is hot, add enough oil to lightly coat the pan. Add the shrimp and quickly saute until just starting to turn pink, but not cooked through. Remove from the pan and set aside. Add the onions and saute just until they begin to soften, about 3 minutes. Add the garlic and cook another 30 seconds. Add the lemon juice, white wine, and stock, and reduce by 2/3, about 5 minutes. Add the shrimp back to the pan and swirl in the butter. Finish with the parsley and check for seasoning. Garnish with lemon slices and serve over rice.
*My Mom served ours on top of crusty, toasted bread that soaked up all the juice. It was delectable! And I have to admit, I was totally amazed that I didn’t have horrid garlic breath!