My husband and I loved this! Neither of us like onions much, but this dish wouldn't be near as wonderful without them! It was delicious! I actually forgot the mustard, and it was still excellent! Next time, I might double the ingredients to make the ring thicker.

I actually changed this up a lot-not because I doubted the recipe, but because I didn't have all the ingredients on hand. I doubled the ingredients and made two "logs" (I don't have a round pan). I sauteed my veggies in a homemade garlic olive oil along with the butter and added some fresh spinach. I didn't have any Swiss, so I used a Cheddar/Monterey blend. I also left out the mustard (we don't like it) and the lemon juice and parsley (didn't have any), but added some black pepper for seasoning. I served it with a side of broccoli and a homemade mushroom gravy. It was a very tasty meal, but a bit salty. Next time I make it I'd like to try to reduce the sodium.

Very easy, very satisfying! My whole family loved this, including my 2-year-old and 4-year-old! I am looking forward to serving this again. Thanks for this wonderful recipe!

Outstanding. I made this for a weeknight family dinner using leftover ham and mushrooms, but this is nice enough to serve for guests! Will definitely make again.