Haven't tried this with crappie (can't figure why it wouldn't be great) but it is the bomb with walleye!!!

Walleye Crab Cakes-

1# chopped walleye
1 small can crab with liquid
1 stick of butter melted
2-3 green onions or 1/4 large sweet onion chopped
1/4 skinned red pepper chopped
1/4 - 1/2 C parsley chopped
1/4 C Miracle Whip (optional) I used it after a comparable test run
1 egg beaten
1/2 c seasoned bread crumbs
Bread crumbs for rolling
pinch old bay

Mix all, roll in crumbs, put on a greased cookie sheet, bake on top rack 375deg for about 15 min, flipping once, until golden on both sides.