Tilapia, flounder, or any other white fish works in place of orange roughy.
Place fillets in a single layer in a lightly greased 13- x 9-inch pan.
Stir together sour cream and next 4 ingredients; spread mixture evenly over fillets. Sprinkle with breadcrumbs, and drizzle with butter.
Bake at 350° for 20 to 25 minutes or until fish flakes with a fork.
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