Sweet Onion and Mushroom Casserole

I used red onions, this recipe was very good, a nice ''custardy'' sweetness. My family all gave it thumbs up, thanks for posting. =)

This was very good and easy to prepare! It is rather rich, but we enjoyed it! I prepared exactly by the recipe and was very pleased at how it turned out! I used vidalia onions and I like the idea of using red onions as noted by a previous reviewer. Thanks!

I made this for my husbands work Thanksgiving Party, it went together easily and presenatation was good. I thought the flavor was mild (I followed directions adding only a little pepper to taste), but good, my husband thought it was bland, hence the 4 stars. Red pepper flakes or sirracha could be added to spice it up. Since this was one week before Thanksgiving I doubled it and froze the second casserole after baking, before adding the cheese topping and I'll update how it freezes & thaws), I know cream sauces can be problematic, but I'm hoping to make Thanksgiving day easier.

This is indulgent, but soooo worth it. This came together easily and is so good. Thanks!