Sounds really good, except for the mushrooms..LOL Great make ahead side!

I was intrigued, since that seems to be the universal description, so I ran it down. The All-Clad site even says "porcelain" but doesn't explain. A customer review on Cooking.com says "heavy, non-metal insert". Here's a description from Metrokitchen.com: With the All-Clad Copper-Core porcelain double boiler insert, you can melt chocolate or gently reheat foods with confidence. This duo features a 2 quart sauce pan made of five layers of metal, including a core, copper layer to generate optimum heat distribution and conductivity. The 1.5 quart insert has a porcelain base to be placed over gently simmering water. You'll gain optimal temperature control of delicate ingredients without the threat of scorching or burning foods. This set comes with two lids to fit each piece individually. The All-Clad Copper-Core porcelain double boiler insert includes the following items:* Exterior pot is a 2 quart All-Clad Copper Core sauce pot* Insert is white porcelain with a capacity of 1.5 quarts* The porcelain comes with a stainless ring that fits around it. This ring has a handle to make the insert easier and safer to remove from the exterior pot* All-Clad stainless lid* Fully-clad All-Clad Copper Core cookware is made in the USA. Lids are currently being made in Asia. AHA! Progress! Then I found a much better picture on good old Houzz: Here's another view from Jlhufford.com It's a porcelain bowl grafted onto an All-Clad pot handle! It's actually a pretty cool design. It gets to be their signature stainless steel, but still a perfectly non-reactive interior. They have a larger one that they say is non-reactive because it's 18/10 stainless, and that's sort of true, but the porcelain is better. :) The picture at Chef's Arsenal that confounded you is probably of that bigger insert. OTOH, the shape isn't the most convenient looking. I haven't found a picture of the interior, but, for whisking, a true bowl shape works better, and, especially, a wider opening so you have room to work sideways, rather than up and down. Pyrex, Duralex, Arc and Anchor Hocking all make appropriate glass bowls. :) They're often sold as cheap open stock at grocery stores that have housewares sections, and they also come in nesting sets. Very useful things to have around. I have the Arc set, an extra from the "Arcoroc" days that was my mothers (most useful size and most used) and an extra set of the four smallest. You could check the market for a good bowl to use as a double boiler. :)

Liz, this is the recipe that I use for the slow-cooker. I posted it back in 2011 I made Slow-Cooker Dressing last year for Christmas, and again this year for our Canadian Thanksgiving. It's the "only" way I'll make it from now on. I always add cooked rice to my stuffing/dressing, as well. Slow-Cooker Stuffing/Dressing 1 cup butter or margarine 2 cups chopped onion 2 cups chopped celery 1/4 cup chopped fresh parsley 12 cups dry bread cubes 1 teaspoon poultry seasoning 1 1/2 teaspoons dried sage 1 teaspoon dried thyme 1/2 teaspoon dried marjoram 1 1/2 teaspoons salt 1/2 teaspoon ground black pepper 4 1/2 cups chicken broth, or as needed 2 eggs, beaten Melt butter or margarine in a skillet over medium heat. Cook onion, celery, and parsley in butter, stirring frequently. Spoon cooked vegetables over bread cubes in a very large mixing bowl. Season with poultry seasoning, sage, thyme, marjoram, and salt and pepper. Pour in enough broth to moisten, and mix in eggs. Spray slow-cooker with non-stick spray and transfer mixture to slow cooker. Cook on High for 45 minutes, then reduce heat to Low, and cook for 4 to 6 hours.

My favorite is cornbread dressing, but bread dressing can be good, too. I have one rule when choosing bread to become dressing. That rule is that it can't be at all sweet in any way. That is, if the old fashioned sage and onion dressing is the objective. Sure, you could shake it up and make a dressing that incorporates some sweet things like fruit and nuts and sweet spices and a bread with a bit of sweetness to it if you so desired. But, for the savory version that seems to be the most popular, you need a totally non sweet bread with a good strong texture and you need to let it become "day old" before you cut it up. Even with my cornbread dressing, I add a bit of bread to the mix. But I don't use any sweet in the cornbread and I will use a home made bread, too. If I had to buy bread for dressing, I would do with something like a loaf of sourdough or a baguette. No way is the average sliced sandwich bread good for dressing. Most of it is too moist, too finely crumbed, too sweet, and has a structure that will just collapse into a wet mush, or worse.