Take salmon fillets out from refrigeration and let them sit (at room temp.) while you make cilantro lime sauce. To make the sauce, place sour cream, chopped green onions, cilantro, garlic, lime juice, sliced garlic, and salt in a food processor or blender. Process the sauce until the cilantro leaves are finely chopped or minced. Set sauce aside while cooking salmon.

Place cumin, coriander, cayenne pepper, salt and pepper in a small bowl, and mix well, to combine spices. Pat all sides of salmon fillets dry, using a paper towel. Sprinkle spice mixture evenly over both sides of salmon, lightly rubbing spices into the fish as you go. Use all the spice mix.

Heat 2 Tablespoons olive oil in a large non-stick skillet on medium-high heat. Once oil is hot, place the salmon fillets gently into hot skillet (with top side down). Cook 4 minutes, without moving the salmon. After 4 minutes, the bottom of the salmon should be crispy and golden brown. Carefully turn salmon to other side, and cook for 2-3 minutes (or until cooked through).

Remove salmon from skillet and transfer to individual serving plates. Drizzle the cilantro lime sauce over the top of the salmon. Garnish each piece of salmon with a sprig of cilantro. Serve, and enjoy!