-
MIX THE MARINADE: Grind fennel seeds, salt, and pepper together until powdery. Place in a mixing bowl and whisk in the yogurt, mustard, vinegar, and 1 teaspoon of the tarragon.
-
PREPARE THE FISH: On a parchment lined baking sheet, place the salmon skin side down. Spread the marinade evenly over the top. Cover and refrigerate for 2-4 hours (or less, see note).
-
BAKE: Preheat the oven to 375°F. Place fish on the center rack and bake filets about 15 minutes until still a little moist.
-
PANKO TOPPING: A few minutes before the fish is done, heat olive oil in a skillet over medium heat. Add the panko and sprinkle salt and pepper generously. Toast the panko until golden, stirring as you go. 2-3 minutes. Once golden transfer to a bowl and mix in the reserved 1 tablespoon tarragon.
-
Once the fish is done, sprinkle the panko over the top and serve.