01 - Heat 2 tablespoons olive oil and 2 tablespoons butter in a large saucepan over medium heat. Add the chopped onion and sauté until soft and translucent, approximately 3 minutes.
02 - Stir in the Arborio rice and toast for 1-2 minutes until the grains become slightly translucent around the edges.
03 - Pour in the white wine, stirring constantly until mostly absorbed by the rice.
04 - Add the hot stock one ladle at a time, stirring frequently. Allow each addition to be fully absorbed before adding more. Continue this process for approximately 20 minutes until the rice is creamy and tender but still slightly firm to the bite.
05 - Stir in the Parmesan cheese until melted and incorporated. Season with salt and pepper to taste, then cover to keep warm.
06 - Pat the scallops thoroughly dry with paper towels. Season both sides generously with salt and pepper.
07 - Heat 2 tablespoons olive oil in a large skillet over medium-high heat until shimmering. Add scallops in a single layer without crowding the pan. Sear for 2 minutes without disturbing to develop a golden crust.
08 - Flip scallops carefully. Add 2 tablespoons butter and minced garlic to the pan. Cook for another 1-2 minutes, basting the scallops continuously with the foaming butter.
09 - Remove from heat. Add lemon zest and juice, tossing gently to coat the scallops evenly in the pan juices.
10 - Spoon creamy risonto onto serving plates. Arrange seared scallops on top and drizzle with the lemon-garlic butter from the pan. Garnish with chopped parsley and serve immediately.