Georgia, I made this last night and I thought it was excellent.
Pecan Crusted Tilapia
4 Tilapia filets
1/2 cup mayo (not low fat...I used Miracle Whip)
1/4 cup Dijon mustard
1 tsp butter or Pam spray
1/4 cup finely chopped pecans.
Put filets in a buttered (or spray with Pam) baking pan.
Combine mayo and Dijon and spread on filets.
Sprinkle with pecans. Bake at 375 for about 10 minutes.
Very simple and very good.