Steps
1. Rinse the trout fillet under cold water and pat it dry with paper towels.
2. In a small bowl, mix the Dijon mustard and heavy cream until well combined.
3. Heat the olive oil in a non-stick skillet over medium heat.
4. Season the trout fillet with salt and pepper, then place it skin-side down in the skillet.
5. Cook for about 4-5 minutes, then carefully flip the fillet over.
6. Spread the mustard and cream mixture over the top of the trout and cook for another 3-4 minutes, or until the fish is cooked through and flakes easily.
7. Remove from heat, garnish with fresh parsley, and serve with a lemon wedge.