
Preheat the oven to 400°F (200°C). Pat the salmon dry and place it in a lightly greased glass baking dish in a single layer.

Squeeze the lemon over the salmon, then season lightly with salt and pepper.
In a small bowl, stir together the sour cream and shredded Parmesan until evenly combined.
Spread the sour cream mixture evenly over the top of the salmon.
Bake for 15 to 20 minutes, or until the salmon flakes easily with a fork and the topping is hot and lightly golden. Serve immediately with extra lemon wedges if desired.