Step 1: Prepare the Salmon

1. Preheat your oven to 375°F (190°C).
2. Use a sharp knife to create a pocket in each salmon fillet by slicing horizontally through the thickest part, being careful not to cut all the way through.
3. In a small bowl, mix together the paprika, garlic powder, onion powder, cayenne pepper, thyme, oregano, black pepper, and salt.
4. Rub the salmon fillets with olive oil and coat them generously with the blackened seasoning mix.

Step 2: Make the Spinach & Parmesan Stuffing

1. In a pan over medium heat, sauté the minced garlic for about 1 minute until fragrant.
2. Add the chopped spinach and cook for 2-3 minutes until wilted.
3. Remove from heat and mix in the Parmesan cheese, cream cheese, black pepper, red pepper flakes, and lemon juice. Stir until well combined.

Step 3: Stuff and Cook the Salmon

1. Carefully spoon the spinach and Parmesan mixture into the pockets of the salmon fillets.
2. Place the stuffed fillets on a greased baking sheet.
3. Bake for 12-15 minutes, or until the salmon is opaque and flakes easily with a fork.
4. For a crispy crust, you can broil the salmon for the last 2 minutes of cooking.

Step 4: Serve and Enjoy

1. Remove the salmon from the oven and let it rest for a few minutes.
2. Garnish with fresh parsley and serve with lemon wedges.
3. Pair with a side of roasted vegetables, garlic mashed potatoes, or a fresh salad.