One of our faves is :
3 TBLSP Mayo
2 tsp lemon juice
lot of dill
(I don't measure any of this, proportions are approx)
Coat the salmon fillet, top with breadcrumbs ( I like panko, but any kind will do), drizzle with melted butter or spray w/ olive oil, bake at 400 for ~ 15 min- delish!
Lately I've been using panko a lot as a crust and love it. I would suggest just coating the salmon with a thin layer of dijon, then make a mixture of panko, fresh herbs (parsley, thyme, basil), lemon zest, minced garlic, s&p, olive oil and press into the mustard to cover the salmon. Bake for 10-15 minutes on pretty high temp (375-400) until top is brown.