Mushroom St. Thomas Recipe -
Mushroom St. Thomas Recipe
  • READY IN 1 hr

Mushroom St. Thomas

Recipe by  

"This recipe was a huge favorite at a local restaurant for many years. Unfortunately, the family who owned the restaurant is no longer in town, but I enjoyed this so much I counted myself lucky to get a copy before they left! Be sure to thaw the spinach out the night before for more even cooking."

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Ingredients Edit and Save

Original recipe makes 1 9x13-inch baking dish Change Servings
  • PREP

    20 mins
  • COOK

    40 mins

    1 hr


  1. Preheat oven to 375 degrees F (190 degrees C). Grease a 9x13-inch baking dish.
  2. Brown turkey sausage and fennel seeds in a large skillet over medium heat, about 10 minutes; drain off excess grease, then add mushrooms and spinach. Cook until the mixture is hot and the juice from the spinach and mushrooms has evaporated,10 to 15 more minutes. Spread the turkey mixture into the prepared baking dish.
  3. In a bowl, mix the butter, Parmesan cheese, half and half cream, Monterey Jack cheese, mustard powder, and vermouth until well combined; pour over the sausage mixture in the baking dish.
  4. Bake in the preheated oven until bubbling and the topping has browned, 20 to 30 minutes. Check after 20 minutes.
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Reviews More Reviews

Most Helpful Positive Review
Dec 21, 2010

This is decadently delicious! Very rich and filling, maybe best served over a bed of jasmine rice or orzo, and with a glass of dry Reisling. I finally found the ultimate mushroom recipe! Thanks for sharing it.

Most Helpful Critical Review
Dec 29, 2010

I was excited to try this recipe. It sounded so good. It was tasty, but a bit on the runny side. Maybe I didn't squeeze the spinach out enough. If I make this again, I would add at least twice as many mushrooms. OH--and I spent $6 on a tin of dry ground mustard--then forgot to add it!! Grrrr, guess I'll be trolling along in Allrecipes land looking for recipes that use it!

Dec 22, 2010

This was absolutely wonderful. I had to halve the recipe, and I used chicken sausage instead of turkey (I had some in the freezer). I added a dibble of Worchestershire sauce, garlic and oregano, but then I just have to play with recipes. My husband and I sat down and ate the whole dish while we were watching movies. Good thing I halved the recipe! Thanks so much for the post!

Jan 24, 2011

This is a good low carb recipe but extremely greasy! I served it with a tomato and fresh basil salad but it was a little too rich to be served without some sort of pasta or something.

Jan 10, 2011

This was wonderful

Mar 28, 2012

A small world! I loved that small restaurant in Northern CA. ate there often...and mostly ordered this entree! I do not post anyone's name or business online without permission. There is another version of this recipe posted online, it says the source is the restaurant who, to my knowledge, originated this dish. While this recipe is tasty, the recipe posted elsewhere seems to be more along the lines of the original...containing Mornay sauce. Nevertheless thanks for sharing this recipe!

May 10, 2011

This was certainly over the top! It's a delicious combination of ingredients, but 2 lbs. of the jack cheese just seemed like an overwhelming amount to me - maybe a typo? Made it according to the recipe (lots of grease from the cheese) and enjoyed it, but will likely reduce the Monterey Jack next time and increase the spinach and 'shrooms.


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  • Calories
  • 754 kcal
  • 38%
  • Carbohydrates
  • 7.1 g
  • 2%
  • Cholesterol
  • 212 mg
  • 71%
  • Fat
  • 60.1 g
  • 92%
  • Fiber
  • 2.2 g
  • 9%
  • Protein
  • 46 g
  • 92%
  • Sodium
  • 1544 mg
  • 62%

* Percent Daily Values are based on a 2,000 calorie diet.

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