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Step 1: Preheat oven to 425 degrees.
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Step 2: In a large 9×13 casserole dish, combine broth, wine, mushrooms and egg noodles, stir until combined.
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Step 3: Season with salt and pepper.
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Step 4: Cover with aluminum foil and bake for 40 minutes.
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Step 5: Remove from the oven and let the noodles cool slightly.
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Step 6: Stir in the sour cream.
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Step 7: The mixture will thicken as it cools.