Related: 6 Foods You Should Never Store in the Refrigerator Door, According to Experts Antonis Achilleos This casserole takes everything you love about French onion soup and transforms it into a rich, ...

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Out of all the countless casseroles we have here on Allrecipes, these are the 10 that our community members have saved the most. That means they're beloved by hundreds, maybe thousands, of home cooks ...