01 - In a large saucepan, heat 2 tbsp olive oil and 2 tbsp butter over medium heat. Add the chopped onion and cook until soft and translucent, about 3 minutes. Stir in the Arborio rice and toast for 1-2 minutes until lightly translucent at the edges.
02 - Pour in the white wine, stirring constantly until mostly absorbed. Add the hot stock, one ladle at a time, stirring frequently. Allow each addition to be fully absorbed before adding more. Continue this process until rice is creamy and al dente, approximately 20 minutes.
03 - Stir in Parmesan cheese until melted and incorporated. Season with salt and pepper to taste. Cover and set aside to keep warm while preparing scallops.
04 - Thoroughly pat scallops dry with paper towels. Season generously with salt and freshly ground black pepper on both sides.
05 - Heat 2 tbsp olive oil in a large skillet over medium-high heat until shimmering. Add scallops in a single layer, ensuring they are not overcrowded. Sear for 2 minutes without disturbing until a deep golden crust forms. Flip each scallop carefully.
06 - Add 2 tbsp butter and minced garlic to the pan. Cook scallops for another 1-2 minutes, continuously basting with the foaming butter. Add lemon zest and juice, tossing gently to coat. Remove from heat immediately.
07 - Spoon creamy risotto onto warmed plates, creating a slight well in the center. Arrange seared scallops atop the risotto. Drizzle with remaining lemon-garlic butter from the pan. Garnish with chopped parsley and serve immediately while hot.