01 - In a large saucepan, heat 2 tablespoons butter and 1 tablespoon olive oil over medium heat. Add the finely diced onion and cook until translucent, about 3 minutes. Stir in the 2 cloves minced garlic and cook for 1 minute until fragrant.
02 - Add Arborio rice to the saucepan and cook, stirring constantly, for 2 minutes until the grains are lightly toasted and edges become translucent.
03 - Pour in the ½ cup dry white wine and cook, stirring frequently, until the liquid is mostly absorbed by the rice, about 2-3 minutes.
04 - Add warm broth one ladleful at a time, stirring frequently and allowing each addition to be completely absorbed before adding the next. Continue this process for about 20 minutes until the rice is creamy and tender but still slightly firm to the bite (al dente).
05 - Stir in the grated Parmesan cheese until melted and incorporated. Season with salt and pepper to taste. Remove from heat, cover, and set aside to keep warm.
06 - Pat the sea scallops thoroughly dry with paper towels. Season both sides generously with salt and black pepper.
07 - In a large skillet over medium-high heat, heat 1 tablespoon olive oil and 2 tablespoons butter until hot and shimmering. Add scallops in a single layer without overcrowding the pan. Sear without moving for 2 minutes until a deep golden crust forms. Flip carefully and sear the other side for 1-2 minutes until just cooked through and opaque.
08 - During the last 30 seconds of cooking, add the 3 cloves minced garlic to the pan. Add lemon juice and lemon zest, swirling the pan to coat the scallops in the lemon-garlic butter sauce. Remove from heat immediately.
09 - Spoon a portion of creamy Parmesan risonto onto each plate. Arrange 4 seared scallops on top of the risotto. Drizzle with the remaining lemon-garlic butter from the pan. Garnish generously with chopped fresh parsley and serve immediately while hot.