Preheat oven to 420.

Place salmon on a tinfoil lined sheet pan.

In a bowl combine olive oil, butter, 2 Tbsp. maple syrup, thyme, salt and pepper. Generously brush mixture over salmon.

Combine remaining maple syrup and walnuts in a bowl until nuts are covered in syrup. Gently pile the nuts over top of the salmon to form a crust.

Bake for 20 minutes.

Remove from oven and allow the salmon to rest for 5 minutes before serving.