I haven’t made this recipe yet, but thought it looked pretty good! From Bon Appetit.
Preheat broiler.
Melt 2 tablespoons butter in heavy large skillet over medium-high heat.
Add mushrooms; sauté until golden, about 7 minutes.
Add Cognac; simmer until liquid reduces to glaze.
Reduce heat to medium.
Add tomatoes, cream and thyme; simmer until sauce thickens, stirring occasionally, about 7 minutes.
Season with salt and pepper.
Melt remaining 2 tablespoons butter in another heavy large skillet over medium-high heat.
Season fish with salt and pepper.
Add fish to skillet; sauté until just cooked through, about 3 minutes per side.
Transfer fish to broiler-proof baking dish.
Spoon sauce over.
Sprinkle cheese over.
Broil until cheese melts, about 2 minutes.