Photo: David Prince; Styling: Leslie Siegel
Total Time
1 Hour 30 Mins
10 servings

How to Make It

Step 1

Preheat oven to 375°.

Step 2

Combine first 6 ingredients in a medium saucepan over medium heat; bring to a boil. Reduce heat, and simmer 10 minutes, stirring frequently. Drain potatoes through a sieve over a bowl; reserve potatoes and liquid.

Step 3

Arrange half of potatoes in an 11 x 7-inch glass or ceramic baking dish coated with cooking spray. Spread Duxelles evenly over potatoes; sprinkle with 1/4 cup cheese. Top with remaining potatoes. Pour the reserved cooking liquid over potatoes; sprinkle with remaining 1/4 cup cheese. Bake at 375° for 50 minutes or until cheese begins to brown. Let stand 5 minutes.

Ratings & Reviews

abbygirl's Review

April 27, 2011
This potato casserole was outstanding...definately comfort food! I pre-made the duxelles and froze them in 1 cup baggies. I added about 7 large garlic and added about 1 cup parmesan cheese total. This was yummy! I would totally do this one again!

BellaGinVA's Review

March 18, 2011
I prep the CL duxelles recipe in advance now, stashing a bunch in my freezer. That way I can prepare this and other impressive dishes in a jiffy. Love this as a side to steak as it's surprisingly delicious and filling but won't weigh you down. We also like it as a side for breakfast (leftover) with eggs!


January 03, 2011
Very flavorful au gratin. Due to needing the duxelles it is very time consuming so only gave it 4 stars. The duxelles give it an earthy flavor. I added some leftover rutabaga I had to use up and it actually gave the dish a nice sweetness in contrast to the mushrooms. I'd recommend it for the flavor and the added color.