Green chile sole casserole recipe in the casserole category

: Trim and discard discolored stem ends from mushrooms. Thinly slice mushrooms. In a 10 to 12 inch frying pan over high heat, stir mushrooms in 1 tablespoon butter often until lightly browned, 12 to 15 minutes. Spoon into a shallow 1 1/2 quart casserole or divide equally among 4 shallow ramekins, about 1 1/2 cups each. Add remaining butter and the onion and chiles to pan. Stir often until onion is limp, about 5 minutes. Add flour, mix well and stir in broth. Puree mixture in a blender or food processor. Return to pan. Add sour cream and stir over high heat until boiling. Remove from heat and add lime juice. Rinse fish, arrange in an even layer over mushrooms in casserole and cover with sauce. Bake at 400 degrees F until fish flakes when prodded, 12 to 15 minutes. Season with salt.