Please read About Searing, Sautéing, and Pan-Frying Fish. Have ready:
Cut off the fins; leave the heads and tails on. Thoroughly whisk together on a plate:
Dredge the trout in the seasoned flour. Heat in a large skillet over medium-high heat:
When the butter is hot, add the trout and cook, turning once, until firm and nicely browned, about 3 minutes per side. Transfer to a hot platter. Add to the drippings in the skillet:
Let it brown. Sprinkle the fish with:
Pour the browned butter over the fish. Garnish with: