01 - Preheat oven to 400°F. Line a baking sheet with parchment paper.
02 - In a mixing bowl, combine ricotta cheese, lemon zest, lemon juice, chopped basil, garlic, Parmesan, salt, and pepper. Stir until well blended and smooth.
03 - Bring a pot of water to a boil. Blanch asparagus spears for 2 minutes, then immediately transfer to an ice water bath to stop cooking. Drain and set aside.
04 - Lay each salmon fillet flat, skin side down. Spread a quarter of the ricotta mixture along one edge, then lay 4 asparagus spears lengthwise on top of the filling. Roll each fillet tightly around the asparagus and ricotta filling, securing with kitchen twine or toothpicks if needed.
05 - Place the salmon rolls seam side down on the prepared baking sheet. Brush the tops with olive oil and season lightly with salt and pepper.
06 - Bake for 18–20 minutes, or until the salmon is cooked through and flakes easily with a fork.
07 - Remove toothpicks or twine. Garnish with fresh basil leaves and serve with lemon wedges alongside.